Here is a PCpartpicker list based on my suggestion. I managed to squeeze in a GTX 680 for about the same price you had in your build. You would be sacrificing boot up and load times with the SSD, and a just a bit slower general usage with the stock i5-3470, but the gaming performance would be far superior. The case is a personal recommendation, as is the power supply.
PCPartPicker part list:
http://pcpartpicker.com/p/rlBO
Price breakdown by merchant:
http://pcpartpicker.com/p/rlBO/by_merchant/
Benchmarks:
http://pcpartpicker.com/p/rlBO/benchmarks/
CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor ($149.99 @ Microcenter)
Motherboard: ASRock H77 Pro4/MVP ATX LGA1155 Motherboard ($87.55 @ Newegg)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($35.99 @ Newegg)
Storage: Samsung Spinpoint F3 1TB 3.5" 7200RPM Internal Hard Drive ($88.98 @ Newegg)
Video Card: EVGA GeForce GTX 680 2GB Video Card ($449.99 @ Newegg)
Case: Corsair 400R ATX Mid Tower Case ($89.99 @ Newegg)
Power Supply: Rosewill Green 630W 80 PLUS Certified ATX12V / EPS12V Power Supply ($49.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Keyboard: Microsoft SIDEWINDER X4 Wired Gaming Keyboard ($39.99 @ Newegg)
Total: $1112.45
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-12-07 12:51 EST-0500)
EDIT: I only just read that you only play WoW and SWTOR, but I still think this would be a good route to go. Aaaand, I thought I picked the same keyboard that you did, but its from the post below OP. Oops.