I plan to build a new computer in the coming week. I've done some research and found that ivy bridge is just around the corner. I plan to use this system for mostly gaming, but with some video editing and general usage aswell.
Fancy case! If you're going to overclock, I actually recommend Sandy Bridge... IB has had problems with heat
I'll go down the list.
Case: If you want it. It's really expensive and really fancy, but it's one of the best out there. The problem is that you can't really add more fans. I don't think you'd need them, but you can only add one 140mm bottom fan. However, there are two 200mm intake fans, one 200mm exhaust fan, and one 140mm exhaust fan. If you want a high-pressure system, have your intakes either running faster than the exhaust, or just add that bottom fan (for intake). It WILL have room for the Noctua NH-D14, which I suggest buying, by the way. Really, an amazing (though extremely expensive) case. (Here's a review where they tested it with a Noctua D-14: http://circuitremix.com/?q=content/thermaltake-level-10...)
Your heatsink should be the Hyper 212 EVO, I think, which is $35, or maybe the $50 Scythe Mugen 3. You're wasting your money after that.
Depending on what we see from the 3570K, you'll probably be going 2500K. This depends on how important video editing is to you. If small differences in video editing performance really are important, go 2600K for its Hyper-Threading (8 virtual cores). The 2500K has roughly equivalent performance in gaming, though.
On a 3k$ build for gaming + video editing + overclocking, the choice is down to either i7-2600k or i7-3770k.
The 2600k is easier to overclock while the 3770k is about twice as fast at video encoding if you use QuickSync, otherwise they perform almost exactly the same clock-for-clock.
If you want to shave ~$100 (although I doubt you would have set the upper limit to $3000 if you did), you could sacrifice hyperthreading and go with i5-2500k or i5-3570k. They perform about the same as i7 for gaming but depending on what sort of video editing you do, how much of it your editing software will offload to the GPU or QuickSync and how well multithreaded your most frequently used tasks/effects are, losing hyperthreading may cost you 0-40% performance for there.
The Maximus board seems fine to me if you don't plan to add any add-in boards other than 2nd graphics.
The Maximus is a total waste of money. You should probably just get a $130 Gigabyte Z68A-D3H-B3. A more expensive board would get you more ports and a higher maximum overclock, but neither of those is really important unless you plan to push for the highest possible clocks.
Great choice of the Case! I just got mine to start my build last week...I love it. Gobs of room! I just put all of my guts from my old FX6800-01e in it along with a 750w XFX PSU along with my new XFX HD6870 2gb video card (as of Christmas). My old FX case kept my HD6870 at 140-150*F, and now the 10GT keeps it below 120*F. i7-920 loves it too.
My MB choice is either the P8Z77V Deluxe or the Sabertooth Z77 along with a i7-3770k...I'll be interested in hearing from you about the Maximus if you decide to go with it.