i5 or i7 for my build

Solution
Instead of bothering with SLI, just get a GTX1080 now. Technically, the i5 6600k is plenty, but at your budget, I would stick with the i7.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor ($328.99 @ SuperBiiz)
CPU Cooler: CRYORIG H7 49.0 CFM CPU Cooler ($34.99 @ Newegg)
Motherboard: Asus Z170-A ATX LGA1151 Motherboard ($151.99 @ SuperBiiz)
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2400 Memory ($0.00)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.49 @ OutletPC)
Video Card: Zotac GeForce GTX 1080 8GB AMP! Edition Video Card...

CTurbo

Pizza Monster
Moderator
Instead of bothering with SLI, just get a GTX1080 now. Technically, the i5 6600k is plenty, but at your budget, I would stick with the i7.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor ($328.99 @ SuperBiiz)
CPU Cooler: CRYORIG H7 49.0 CFM CPU Cooler ($34.99 @ Newegg)
Motherboard: Asus Z170-A ATX LGA1151 Motherboard ($151.99 @ SuperBiiz)
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2400 Memory ($0.00)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.49 @ OutletPC)
Video Card: Zotac GeForce GTX 1080 8GB AMP! Edition Video Card ($603.99 @ SuperBiiz)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($86.99 @ NCIX US)
Power Supply: SeaSonic G-750 750W 80+ Gold Certified Semi-Modular ATX Power Supply ($93.99 @ SuperBiiz)
Total: $1350.43
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-10-25 22:04 EDT-0400
 
Solution