PC build for Photoshop and Premiere Ideas?

So I recently built a gaming computer for myself and my family saw it they wanted me to build them one. They own a rather successful photography and videography studio and would need a computer specifically designed for Photoshop, Premiere and other various smaller Adobe products (Lightroom, Encore, etc). Mainly Photoshop and Premiere though. This computer would not be used for personal use at all, just business. I have heard these programs are very CPU intensive so I was looking into higher quality processors. Then so they don't need to worry about overheating ever, I thought about a small water cooler. They record in 1080i HD. They won't be doing any 3D models or anything so I figured a middle of the road graphics card would suffice. When running it on my gamer, Premiere runs pretty slow, especially in HD. I looked at the specs and it used a lot of my Ram, I then decided it probably could use more than I had. (Update: Asked them why and they said it was my CPU and GPU trying to catch up and I needed to render.) Also, tell me if this is good or bad. I have my OS on the SSD to run fast but the programs I am concerned about running fast are the Adobe ones so I figured I could install OS on the Hard Drive and the Adobe ones on the SSD. What do you think? Then there is the case. They need an easy to access, easy to add, good case. Want to stay under 100. The R4 was on sale but I am thinking the door would get in the way a little. Anyone know of any big, easy and functional cases? Preferably not flashy but the main concern is functionality.Then the board. I love Asus and especially their reliability will be awesome. But the ones with the more features and plugs got a little expensive. Any good cheaper ones? Maybe like an M5a97? They want USB 3.0 and plenty of USB. FIrewire if possible for their older units but not necessary. They asked me to build a low maintenance, fast computer for video editing on Premiere (They have another for Photoshop but it would be used on this one as well). They would probably want to stay around 1000.

This is the build I set up

PCPartPicker part list: http://pcpartpicker.com/p/3Ke0D
Price breakdown by merchant: http://pcpartpicker.com/p/3Ke0D/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3Ke0D/benchmarks/

CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor ($319.99 @ Amazon)
CPU Cooler: Corsair H55 57.0 CFM Liquid CPU Cooler ($44.99 @ Newegg)
Motherboard: MSI H87-G43 ATX LGA1150 Motherboard ($74.79 @ Newegg)
Memory: Crucial Ballistix Sport 16GB (2 x 8GB) DDR3-1600 Memory ($129.84 @ Amazon)
Storage: A-Data Premier Pro SP600 64GB 2.5" Solid State Disk ($44.99 @ TigerDirect)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($54.43 @ OutletPC)
Video Card: EVGA GeForce GTX 660 2GB Video Card ($169.99 @ NCIX US)
Case: Fractal Design Define R4 Blackout with Window ATX Mid Tower Case ($79.99 @ Newegg)
Power Supply: Corsair CX 500W 80+ Bronze Certified Semi-Modular ATX Power Supply ($59.99 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.98 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $1088.96
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-14 21:55 EDT-0400)

This is a link to my build for reference since I used it as a benchmark

http://pcpartpicker.com/user/thepianoman42/saved/3wwh



I tried to provide as much info as possible in hopes this build can be optimized for them. I want them to get good use out of this computer and don't want them to be disappointed in work I do for them. Any advise would be much appreciated! Thanks!