$1200 Gaming PC Review/Suggestions

These are the parts I have managed to select for my build. I was wondering if you guys could review them and add any suggestions. I wouldn't mind trimming a little bit of the price off.

The computer will be used primarily for gaming, but will also be my everyday school rig.

Should run at 1920x1080 resolution? I will use it with both the monitor and my 42inch TV.

Since I have settled on a 3570K and the Radeon 7850 it seems it would be in my best interest to overclock them, so would I need some aftermarket cooling as well?

All input is welcome. I am in no way set on these parts, but it is simply my starting point.

PCPartPicker part list /
Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($229.99 @ Newegg)
Motherboard: Gigabyte GA-Z77M-D3H Micro ATX LGA1155 Motherboard ($114.99 @ Newegg)
Memory: G.Skill Value Series 8GB (2 x 4GB) DDR3-1333 Memory ($39.99 @ Newegg)
Hard Drive: Western Digital Caviar Green 1TB 3.5" 5400RPM Internal Hard Drive ($106.28 @ Newegg)
Video Card: Sapphire Radeon HD 7850 2GB Video Card ($256.97 @ Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($64.98 @ Newegg)
Power Supply: OCZ 650W ATX12V Power Supply ($79.99 @ Newegg)
Optical Drive: Sony AD-7280S-0B DVD/CD Writer ($22.98 @ Newegg)
Monitor: AOC i2353Ph 60Hz 23.0" Monitor ($189.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (64-bit) ($99.99 @ Newegg)
Total: $1206.15
(Prices include shipping and discounts when available.)