First build. Am I missing anything?

[PCPartPicker part list](http://pcpartpicker.com/p/Zkb4P6) / [Price breakdown by merchant](http://pcpartpicker.com/p/Zkb4P6/by_merchant/)

Type|Item|Price
:----|:----|:----
**CPU** | [Intel Core i7-4790K 4.0GHz Quad-Core Processor](http://pcpartpicker.com/part/intel-cpu-bx80646i74790k) | $309.99 @ Amazon
**Motherboard** | [Asus Z97-PRO ATX LGA1150 Motherboard](http://pcpartpicker.com/part/asus-motherboard-z97pro) | $187.99 @ Newegg
**Memory** | [Corsair Vengeance Pro 16GB (2 x 8GB) DDR3-1866 Memory](http://pcpartpicker.com/part/corsair-memory-cmy16gx3m2a1866c9) | $184.99 @ Amazon
**Storage** | [Crucial MX100 256GB 2.5" Solid State Drive](http://pcpartpicker.com/part/crucial-internal-hard-drive-ct256mx100ssd1) | $109.97 @ SuperBiiz
**Storage** | [Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive](http://pcpartpicker.com/part/seagate-internal-hard-drive-st1000dm003) | $53.98 @ OutletPC
**Video Card** | [MSI GeForce GTX 980 4GB Twin Frozr Video Card](http://pcpartpicker.com/part/msi-video-card-gtx980gaming4g) | $585.91 @ Newegg
**Case** | [Cooler Master Storm Enforcer ATX Mid Tower Case](http://pcpartpicker.com/part/cooler-master-case-sgc1000kwn1) | $74.99 @ Newegg
**Power Supply** | [SeaSonic 650W 80+ Gold Certified Semi-Modular ATX Power Supply](http://pcpartpicker.com/part/seasonic-power-supply-ssr650rm) | $102.98 @ SuperBiiz
**Operating System** | [Microsoft Windows 7 Professional SP1 (OEM) (64-bit)](http://pcpartpicker.com/part/microsoft-os-fqc04649) | $141.26 @ OutletPC
**Monitor** | [Samsung U28D590D 60Hz 28.0" Monitor](http://pcpartpicker.com/part/samsung-monitor-u28d590d) | $599.99 @ Best Buy
**Wireless Network Adapter** | [\*Asus PCE-N53 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter](http://pcpartpicker.com/part/asus-wireless-network-card-pcen53) | $29.99 @ Newegg
| | **Total**
| Prices include shipping, taxes, and discounts when available | $2382.04
| \*Lowest price parts chosen from parametric criteria |
| Generated by PCPartPicker 2014-10-02 10:59 EDT-0400 |

Any replies are appreciated! Do you think I need any extra cooling? I have a copy of Windows 7 Professional already, is it worth going for 8.1 intead?