Coppertin, what matters is not if you don't want sli now, what matters is if you EVER want to do it without having to change psu and motherboard.
I would get this without the cooler and without an hdd if you feel your 500gb hdd is enough.
Considering the games you play, I wouldn't even recommend the gtx 980. Get a gtx 970, it will be plenty for those games and get an other one in a year or two when games actually need it.
The ram can be upgraded easily too so I would go with 8gb.
PCPartPicker part list:
http://pcpartpicker.com/p/xRxsWZ
Price breakdown by merchant: http://pcpartpicker.com/p/xRxsWZ/by_merchant/
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($219.88 @ OutletPC)
Motherboard: ASRock Z97 Extreme3 ATX LGA1150 Motherboard ($104.99 @ Newegg)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866 Memory ($72.97 @ OutletPC)
Storage: Crucial MX100 256GB 2.5" Solid State Drive ($104.99 @ SuperBiiz)
Video Card: MSI GeForce GTX 970 4GB Twin Frozr V Video Card ($344.99 @ Amazon)
Case: Fractal Design Define R4 w/Window (Black Pearl) ATX Mid Tower Case ($112.99 @ SuperBiiz)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($54.99 @ NCIX US)
Total: $1015.80
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-13 10:24 EST-0500