4K gaming suggestion on a 1.2k~ish budget

[cowmoohard]

I recently bought 4k 55" Samsung TV with black friday sale going on.

I am attempting to build up a PC, but am having some confusion on what to do.
Budget: $1200 ideal~ $1400

CPU+GPU:
i5 + 980 GTX vs i7 + 970 GTX

i7 Most likely aiming for 4790k Price: 300+ 330 = $630
i5... I have not a slight clue what to go for Price: 150 + 570 = $720

CPU Cooling
Need suggestions

Case:
Planning on keeping cheap budget so I looked into EVGA Hadron
EVGA Hadron Hydro Mini-ITX Chassis Black with 500W 80Plus Gold Power Supply (110-MW-1002-K1) Price: $110

Memory
8GB enough? What specs are good enough? 1600Mhz?

Motherboard
ASRock Z97M-ITX

 

[sammy sung]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($209.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($19.99 @ Newegg)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($129.98 @ SuperBiiz)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($64.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($48.49 @ OutletPC)
Video Card: XFX Radeon R9 295X2 8GB Core Edition Video Card ($656.50 @ Newegg)
Case: Corsair 300R ATX Mid Tower Case ($59.99 @ Micro Center)
Power Supply: Rosewill Lightning 1000W 80+ Gold Certified Semi-Modular ATX Power Supply ($99.99 @ Newegg)
Optical Drive: LG GH24NSC0B DVD/CD Writer ($12.99 @ Newegg)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($82.85 @ SuperBiiz)
Total: $1375.76
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-11-26 00:09 EST-0500

Performance > Life