Need help picking components for a PC

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($326.99 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($28.89 @ OutletPC)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($130.98 @ Newegg)
Memory: Kingston Fury Black Series 16GB (2 x 8GB) DDR3-1600 Memory ($111.89 @ SuperBiiz)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($97.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.49 @ OutletPC)
Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE 3X Video Card ($295.00 @ Newegg)
Case: Corsair 200R ATX Mid Tower Case ($57.99 @ Micro Center)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($59.99 @ NCIX US)
Total: $1162.21

I will do an explanation for each part in case you want to know.

CPU: i7 4790k- I chose this for the build because for video editing and gaming, this is second to none for a consumer desktop CPU, the hyperthreading will speed up your rendering and such.

Motherboard- ASUS Z97-A: Very good motherboard with good features and not too expensive, high quality parts and will fit your needs just fine.

Memory- 16gb: I chose 16gb of ram over 8gb because certain software used for video editing may occasionally use more than 16gb of ram, better safe than sorry.

Storage- Samsung 850 Evo 250gb & WD Blue 1TB: I chose the 850 evo as your boot drive because it is one of the more reliable SSDs on the market and it is very fast, for your mass storage I chose the WD Blue 1TB drive, inexpensive, decently fast, and lots of storage for games and your recordings.

GPU- Gigabyte GTX 970: The 970 is a solid gaming card and it is at a pretty good price point, will handle most games out there maxed out at 1080p.

Case- Corsair 200R: Great case, lots of features and high quality, I suggest looking at some other cases to see what you like best.

Power Supply- EVGA B2 750W: My personal favorite, I am running this right now, it is a bit larger than other units out there, but for the price it is hard to beat. Dead silent, lots of power, semi-modular, nice finish, and sleeved cables.

Do you have a cpu for your motherboard already? Because if you want to use that motherboard with a new compatible CPU, it's going to need a BIOS update. Otherwise Vishera CPus may not be compatible. Also, what speed is your RAM, and what size SSD do you want?

If you want something within your budget, this is the best you can do with what you have: http://pcpartpicker.com/p/7LkYBm
It's not a great build overall, but it should do fairly well with editing. If you want a build that might be better for editing, you could get a worse gpu, like the gtx 960 or r9 280x and take that money to buy a better cpu, like the fx 8350. But you need to make sure your mobo's BIOS settings allow it to be compatible with a Vischera CPU.