Suggestions for PC build before I buy it ?

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor ($179.99 @ NCIX US)
Motherboard: MSI B75MA-P45 Micro ATX LGA1155 Motherboard ($66.24 @ Amazon)
Memory: Crucial Ballistix sport 8GB (2 x 4GB) DDR3-1600 Memory ($34.99 @ Newegg)
Storage: Seagate Barracuda 500GB 3.5" 7200RPM Internal Hard Drive ($54.99 @ NCIX US)
Video Card: MSI Radeon HD 7850 2GB Video Card ($179.99 @ Newegg)
Case: Zalman Z9 ATX Mid Tower Case ($31.98 @ NCIX US)
Power Supply: XFX ProSeries 450W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($44.99 @ NCIX US)
Total: $583.17
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-01-10 01:10 EST-0500)
This is going to be for gaming and internet.
Games that I will be playing: League of legends, Far cry 3, skyrim, and COD online.