[Build Ready] $1500ish Gaming/Streaming PC. What am I missing?

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i7-4790K 4.0GHz Quad-Core Processor $326.99 @ NCIX US
CPU Cooler Corsair H100i 77.0 CFM Liquid CPU Cooler $99.99 @ Amazon
Motherboard Gigabyte G1.Sniper Z87 ATX LGA1150 Motherboard $168.99 @ SuperBiiz
Memory Kingston Fury Black Series 16GB (2 x 8GB) DDR3-1866 Memory $116.99 @ Amazon
Storage Samsung 850 EVO-Series 250GB 2.5" Solid State Drive $119.99 @ NCIX US
Storage Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive $53.99 @ NCIX US
Video Card MSI GeForce GTX 970 4GB 100 Million Edition Video Card $349.99 @ Newegg
Case NZXT H440 Designed by Razer™ ATX Mid Tower Case $149.99 @ Amazon
Power Supply XFX XTR 750W 80+ Gold Certified Fully-Modular ATX Power Supply $99.99 @ Amazon
Operating System Microsoft Windows 8.1 (OEM) (64-bit) $93.99 @ NCIX US
Prices include shipping, taxes, rebates, and discounts
Total $1580.90
Generated by PCPartPicker 2015-03-07 12:23 EST-0500

Changed some of the parts so it has a Black/Green colour scheme, which will compliment your case's colour.

Also went for a higher quality PSU which is only $5 more expensive.

/r/buildapc Thread