Gamer, Graphic Designer and Editor..

Yo build is good - don't go for t Titan, it's actually a more specialised card, for developers n particular kinds of 3d work

What sort of editing will you be doing? Do you intend to use the 3D capabilities on Cinema 4D?

i would go with the titan. it provides the same gaming performance as about a 780ti, with 6gb of vram. Also, it performs workstation like tasks, as in video editing, picture editing, 3d animation, 3d design, etc, much faster than gaming cards, like a 690. Also, the titan will run cooler than a 690, since there arent 2 gpus on one card. You can sli titans in the future too

EDIT: also, recording gameplay is more cpu dependent, and your cpu is high end. and with nvidia cards you get shadowplay, which helps you record without losing fps

Okay, this one has a lot to it. To start, any high-end workstation with a good video card will crush games, so build with that in mind. Prioritize the workstation aspect and then throw in a video card. That's about it for the general comments, though. Let's get down to the parts:

Monitor - Your monitor will determine whether you can use a gaming card (e.g. Geforce) or need a professional card (e.g. Quadro). Will either of your monitors have 10-bit color? If you have that and need to use it, then you'll need a Quadro card. If not, then the question is which design apps do you use? If you stay within the Adobe suite, then you'll be good to go with a Geforce card. Certain design programs need professional cards, and there is no way around it. Even though some Adobe programs officially support only professional cards, all you have to do is type the name of your Geforce card into a text file - boom, working! If you fall in between, you can get a powerful gaming card for games and workloads, and then also get a Quadro card for meeting professional application and color requirements. Hopefully, you can just get a Geforce card.

Motherboard - I think you made a good choice by going with an X79 chipset, and I am assuming you want to go with an ATX size based on your selected motherboard. You are going to want the board with the most compatibility possible for all the random crap you're going to need to run with it as a designer. Also, the more stuff the board has onboard, the better. Having more on board will free up expansion for other things. The only ATX motherboard with onboard WiFi and bluetooh is the Asus X79 DELUXE. NewEgg has them open box right now for only $15 more than the board you selected, and it is a much better board all around. The DELUXE will serve you needs much more smoothly, from the PCI-e layout to the extra features it has. Also, the board you selected has an old-school PCI slot, which almost nothing uses any more, so that's wasted space unless you have peripherals from the 90s still kicking around.

CPU - There are two main things that will push someone over the edge from the Z87 chipset to the X79 chipset: (1) the available CPUs, and (2) the expandability. The Z87 has the fastest per-core performance on a quad-core chip (i.e. the 4770k). The 4820k is a quad core that is not as fast as the 4770k. So in terms of CPU, you'll definately want to take advantage of the six-core options available on the X79 platform; otherwise, go you will want to consider your expansion needs with an eye toward potentially selecting the Z87 chipset. As for expandability, the X79 shipset really shines here because it has 40 PCI-e lanes. When you see PCI-e 4x or PCI-e 16x, that indicates how many lanes the card can use if there are available PCI-e lanes, not necessarily how many the card will use. The Z87 chipset with a 4770k allows up to 16 PCI-e lanes. That can go all to one 16x card, it can split between two 16x cards using 8 lanes each, or one 8x card and two 4x cards. You get considerably more options with X79's 40 PCI-e lanes. It will let you fully use two 16x cards at the same time (32 lanes) and still have 8 left over for whatever you want. Point is, X79 gives you the most exandability. If having more than only 16 PCI-e lanes matters to you, then go with X79. All that said, my CPU recommendation is the 4930k. It's super fast, allows super fast memory, allows super fast expansion, and you can overclock it to make it even more super fast. It's also 95% the CPU that the 3960x is for half the price. Yay for affordable speed!

Cooler - The one you chose is good. I wold also take a look a all-in-one coolers like the H100i. They will cool only marginally better, unless you're overclocking (in which case the margin will increase), but they look nice and serve great as extra exhaust fans.

Memory - Good choice. Max out for rendering.

Storage - Storage is tricky for builds like yours. The one you chose is a good drive-type, but it's way too small to use as your only SSD. That case you chose allows up to six drives. The best setup will be to have five drives: one SSD for the OS, one SSD for scratch, one SSD for programs, and two HDDs in RAID1 for media.

OS SSD - Use the Samsung 840 Pro 256 GB. It will need a lot of writing, and the Pro is resilient to that.
Scratch SSD - Either the Kingston SSDNow V300 60 GB or the Samsung Pro 840 128GB. I personally think the Samsung is best suited to the task because it has MLC flash, but 128 GB is way overkill for a scratch disk. The Kingston has similar IOPS and is cheap for how good it is.
Programs SSD - Hands down, get the Samsung EVO 1TB. It's actually faster than the 840 Pro. The main downside of having TLC flash, which is less write-resistant than the Pro's MLC flash, doesn't matter for program-only use. You'll just be installing and then reading from there on out. For that, you'll want a lot of fast storage, and the 1TB EVO is the best there is for that use.
Media HDDs - For your media, speed doesn't matter nearly as much as reliability coupled with huge storage. Segate's 4TB drives kicks ass for that. I'll recommend getting two of the Seagate Desktop HDD.15 ST4000DM000 4TB with 64MB Cache. Run them in RAID1, and even if one dies, you can just replace it without any data loss.

Power supply - The one you chose is pretty good. I recently got the AX 860i, and it's great. That 750 is pretty solid, though. You should be fine, but bumping up to a Platinum 80+ certification might save you a little on the efficiency department and protect all those expensive parts with a little more assurance. I personally don't think it will make that big of a difference - if any.

GPU - This will depend on your monitor, as mentioned above. Assuming you won't need 10-bit color, and you use only the Adobe suite, however, I'll recommend the GTX 780 ti. It's faster than the Titan, and it will do everything you need it to do under the assumptions I mentioned. Plus it will destroy games as much as they can be destroyed on a single card at the present time.

Good luck!

For true 3D you'll need a certified Quadro gpu for your computer.
You'll also need a certified 3D monitor by Nvidia with active shutter glasses.

Source (Maxon):
http://www.maxon.net/products/general-information/general-information/system-requirements.html

Certified graphics cards for 3D modeling (Nvidia):
http://www.nvidia.com/object/quadro_pro_graphics_boards.html

If you don't need this capability, then according to Cinebench the GTX 780, 780Ti and Titan all have roughly the same performance, so the GTX 780 is probably the smartest buy.

Cinebench benchmarks: http://www.c4dcafe.com/ipb/Benchmarks/cinebench.html
C4D community: http://www.c4dcafe.com/ipb/index

EDIT: According to the benchmarks, 6 core cpu should provide a larger performance boost than a better gpu.