Quick review of build please

I'm trying to be a good husband and want to buy my wife a computer for her birthday. She uses the computer for general internet surfing and LOTS of gaming. We mainly play MMO's but every once in a while she'll play something different. I've been reading up but it's always nice to get a second set of eyes on something before pulling the trigger. Any input is greatly appreciated and my wife will appreciate it even more :)

Chassis Model: Special Deal Hot Seller - Corsair Obsidian 550D
Processor: Intel Core i5 3570K 3.40 GHz (Unlocked CPU) (Quad Core)
Motherboard: ASUS P8Z77-V LX (Intel Z77 Chipset) (Does Not Support SLI)
System Memory: 8GB DDR3 1600MHz Digital Storm Certified Performance Series (Highly Recommended) (Hand Tested)
Power Supply: 800W Corsair GS (Dual SLI Compatible)
Hard Drive Set 1: Operating System: 1x (1TB Western Digital Caviar (7200 RPM) (Model: Black Edition)
Optical Drive 1: DVD-R/RW/CD-R/RW (DVD Writer 24x / CD-Writer 48x)
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Video Card(s): 1x NVIDIA GeForce GTX 770 2GB (Includes PhysX)
Sound Card: Integrated Motherboard Audio
Extreme Cooling: AIR: Stage 1: Cooler Master Hyper 212 EVO (High Performance Cooler)
Chassis Airflow: Standard Factory Chassis Fans
CPU Boost: Stage 1: Overclock CPU 4.0GHz to 4.4GHz
Windows OS: Microsoft Windows 7 Home Premium (64-Bit Edition)
Recovery Tools: Windows Recovery Toolkit (Bundled with Windows CD)
Exclusive T-Shirt: FREE: Digital Storm T-Shirt - Black (Extra Large)
Warranty: Life-time Expert Customer Care with 3 Year Limited Warranty

Let me know if anything just doesn't make sense. Once again thanks in advance for any input.

Thanks for the quick response. The trigger has been pulled and now we wait. Hopefully it will arrive in time :)

The PSU is a bit overkill for it but I don't know if the price difference is significant enough to bother dropping it down to 600W.