New Computer Rig...Any Suggestions?

Here is the computer I am buying for about 1500...any suggestions? I am looking a solid gaming system. Case: Tuniq 3 Gaming Tower Case - Black Processor: Intel® Core™ i7 920 Processor (4x 2.66GHz/8MB L3 Cache) Motherboard: GIGABYTE GA-EX58-UD3R -- Intel X58 Chipset CrossFire and SLI Supported w/7.1 Sound, Triple-Channel DDR3, Gb LAN, S-ATA Raid, USB 2.0, PCI-E MB Memory: 12 GB [2 GB X6] DDR3-1333 Video Card: NVIDIA GeForce GTX 275 – 896MB - Single Card Power Supply: 650 Watt -- Corsair CMPSU-650TX Power Supply - SLI Ready Processor Cooling: Thermaltake V1 CPU Cooling Fan System Kit - Silent & Overclocking Proof = Maximum cooling efficiency for quietness and performance Primary Hard Drive: 1 TB HARD DRIVE -- 16M Cache, 7200 RPM, 3.0Gb/s - Single Drive Optical Drive: 22X Dual Format/Double Layer DVD±R/±RW CD-R/RW Drive - Black Sound Card: 3D Premium Surround Sound Onboard Network Card: Onboard LAN Network (Gb or 10/100)

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How to Ask for New Build Advice
Fill out the form thingy, should be easy and straight forward and repost the topic into the "Homebuilt Systems" forum, not the "Cpu and components" forum.
Once you did that, help will be right around the corner.