any suggestions on my build

im driving myself crazy building a new pc ..also any comment

would help.

Specifications:
Chassis: Digital Storm 850Si
Exterior Finish: - Standard Factory Finish
Interior Finish: - Standard Factory Finish
Power Supply: 750W Corsair HX (Dual SLI Compatible) (Silent Edition)
Processor: Intel Core 2 Quad Q9550 2.83GHz (1333MHz FSB) (12MB Cache)
Motherboard: nVidia 790i Ultra Core 2 Quad (nForce 790i Ultra SLI) (DDR3 Only)
System Memory: 4GB DDR3 1333MHz Corsair
Card Reader: - No Thanks
Hard Drive 1: 500GB Western Digital (16MB Cache) (7200 RPM) (SATA)
Hard Drive 2: - No Thanks
Raid Option: - No Thanks
Hard Drive 3: - No Thanks
Optical Drive 1: DVD-ROM/CD-ROM (DVD Reader 16x / CD Reader 40x)
Optical Drive 2: DVD±R/RW/CD-R/RW (DVD Writer 20x / CD-Writer 48x)
Wireless Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Video Card: NVIDIA GeForce GTX 260 896MB (Includes PhysX Technology)
TV Tuner: - No Thanks
Sound Card: Integrated Motherboard Audio
Extreme Cooling: Air Cooled Stage 3 WindTunnel (Copper Heatpipe Heatsink & Additional Case Fans)
Internal Lighting: Blizzard Internal Lighting (Blue Edition) (Cold Cathode Tubes)
Modifications: - No Thanks
Boost Processor: - No Thanks, Please do not overclock my processor
Boost Video Card: - No Thanks, Please do not overclock my video card(s)
Boost Memory: - No Thanks, Please do not overclock my memory
Tweak Windows: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Microsoft Windows Vista Home Premium (64-Bit Edition) (For Enthusiasts)
Restore Kit: Digital Storm Specialized Recovery System (DVD Image Based)
Protection: - No Thanks
Office: - No Thanks
Benchmarking: - No Thanks
Install/Test Game: - No Thanks
LCD Display: - No Thanks
Surge Shield: - No Thanks
Speakers: - No Thanks
Keyboard: - No Thanks
Mouse: - No Thanks
External Storage: - No Thanks
Warranty: 3 Year Platinum Care Extended Parts & Labor Warranty