Need an opinion on new gaming/video editing rig build =)

LegoMyGeggo

Honorable
Dec 15, 2013
25
0
10,530
Hi guys, accidentally bought an extra GTX 1080 and decided to make a new rig for myself =).
What is your intended use for this build? Gaming, video editing, audio recording
If gaming, what kind of performance are you looking for? I figure the GTX 1080 will pretty much max everything out =)
What is your budget (ballpark is okay)? <2000
In what country are you purchasing your parts? USA

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6800K 3.4GHz 6-Core Processor ($340.00)
CPU Cooler: Corsair H100i v2 70.7 CFM Liquid CPU Cooler ($96.99 @ Jet)
Memory: Corsair Vengeance LED 32GB (4 x 8GB) DDR4-3000 Memory ($195.99 @ Jet)
Storage: Plextor M8Pe 1TB M.2-2280 Solid State Drive ($300.00)
Video Card: NVIDIA GeForce GTX 1080 8GB Founders Edition Video Card (Purchased For $570.00)
Power Supply: Cooler Master 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($91.98 @ Directron)
Operating System: Microsoft Windows 10 Home OEM 64-bit ($88.58 @ OutletPC)
Total: $1683.54
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-01-07 19:00 EST-0500

Provide any additional details you wish below.
Some things I am trying decide upon:

1) I decided to go with the i7-6800K cause from what I've read the temperatures are generally lower than the i7-5820K. However, since I plan to do video editing etc, I figure the 6800K would be what I would need. Or should I go with the i7-7700K?

2) I was hoping to get a small factor case, but I'd like your opinion on this. I was debating between the the Fractal Design Define R5 or maybe the smaller mini C, but I figure the R5 has more expansions etc, or maybe I should get the Define S. I'd love your opinions or if you have any other case suggestions as well :).

3) Finally, I'm debating on the mobo between the EVGA micro 2 (https://pcpartpicker.com/product/7q38TW/evga-motherboard-131hee095kr) or the Asrock extreme 4 (https://pcpartpicker.com/product/xJFPxr/asrock-motherboard-x99extreme4). I couldn't find much of a difference between the two except that the Micro2 has a USB 3.1 gen 2 port as well as USB 3.1 gen 1 ports while the asrock extreme4 only has USB 3.1 gen 1 ports. Do I really need a USB 3.1 gen 2 port? I only ask because MicroCenter currently has the Asrock Extreme4 and the i7-6800K in stock and if bought together I could get a $30 discount, plus a $30 rebate for the mobo.
Anyhow, any thoughts or advice would be greatly appreciated!