Turned out a bit over budget and still missing a case, but I definately would pay the premium to get the 4690K combined with Z97 mobo. If you go for non-K CPU you can save a bit on the mobo and go for H97 or even H81.
PCPartPicker part list:
http://pcpartpicker.com/p/wFZ823
Price breakdown by merchant: http://pcpartpicker.com/p/wFZ823/by_merchant/
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($199.99 @ Micro Center)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($26.98 @ OutletPC)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($144.94 @ B&H)
Video Card: Gigabyte GeForce GTX 970 4GB Video Card ($297.00 @ Newegg)
Power Supply: EVGA SuperNOVA GS 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($59.99 @ NCIX US)
Total: $728.90
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-30 18:16 EDT-0400
Edit: Lol didn't see at first, but because of discount and rebate turned out well below 800$. You'll probably pay a bit more in the end when selecting suppliers, but maybe you can still keep it under 800$ after adding your preferred case. check cooler compatibility though.