is this a balanced build

Solution
Its top end , and well balanced .

I would consider using a different motherboard with an M.2 socket for faster hard drive speeds
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($317.75 @ OutletPC)
CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler ($85.98 @ OutletPC)
Motherboard: Asus MAXIMUS VII HERO ATX LGA1150 Motherboard ($208.09 @ SuperBiiz)
Memory: Corsair Dominator Platinum 16GB (2 x 8GB) DDR3-2400 Memory ($279.99 @ Newegg)
Storage: Samsung XP941 Series 256GB M.2-2280 Solid State Drive ($249.99 @ Newegg)
Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE Video...
Its top end , and well balanced .

I would consider using a different motherboard with an M.2 socket for faster hard drive speeds
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($317.75 @ OutletPC)
CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler ($85.98 @ OutletPC)
Motherboard: Asus MAXIMUS VII HERO ATX LGA1150 Motherboard ($208.09 @ SuperBiiz)
Memory: Corsair Dominator Platinum 16GB (2 x 8GB) DDR3-2400 Memory ($279.99 @ Newegg)
Storage: Samsung XP941 Series 256GB M.2-2280 Solid State Drive ($249.99 @ Newegg)
Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE Video Card (2-Way SLI) ($359.99 @ Amazon)
Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE Video Card (2-Way SLI) ($359.99 @ Amazon)
Case: Corsair 780T ATX Full Tower Case ($174.98 @ Newegg)
Power Supply: SeaSonic X Series 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($137.98 @ OutletPC)
Wireless Network Adapter: Asus PCE-AC68 802.11a/b/g/n/ac PCI-Express x1 Wi-Fi Adapter ($96.99 @ Amazon)
Other: Hdmi 2.0 ($8.49)
Total: $2280.22
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-19 18:09 EST-0500
 
Solution
Thank you for the reply I was wondering about the mb I think I will go with the on you suggested I've been researching for about a week in a half their is a lot of different stuff out their backed by mixed reviews this will be my first build kinda nervous