New Rig Specs

I'm planning on buying a new rig (Specs Below).  I wanted to stay around $2200; and I still might hit that since I dont plan on buying it till mid December or so.  This build is currently running me at $2399.  This here is my Montitor, so having a decent GFX card is important http://www.newegg.com/Product/Product.aspx?Item=N82E16824014124 , and I will probably get SLI later on.  I was wondering if there is anything I should know about for this build.  For example the case size, the 64bit vista, or the if the power supply is adequate for an SLI down the road.  My current rig is nearly 5 years old, and I have never been able to play games with AA on and stuff let alone High Settings heh. Oh while Im typing this I guess I'll ask if their is a military discount?  Also I just read a thread that a 8800 GT 512 will be comming out.  How does this compare with the one on the current build if anyone knows? 

 

 

 

 

 

 

 

Case: Digital Storm Twister PRO (Black Anodized Aluminum Finish)
Power Supply: 750W Thermaltake (SLI Compatible) (Silent Toughpower Edition)
Processor: Intel Core 2 Duo E6850 3.00GHz (1333MHz Front Side Bus) (4MB Cache)
Motherboard: nVidia 680i Core 2 Quad (By: eVGA) (nForce 680i SLI) (A1 Revision)
Memory: 4GB DDR2 Corsair at 800MHz XMS2 (Dual Channel) (Extreme-Performance)
Floppy / Media: Digital Media Card Reader (Black)
Hard Drive 1: 320GB (Western Digital / Seagate) (16MB Cache) (7200 RPM) (SATA)
Hard Drive 2: 320GB (Western Digital / Seagate) (16MB Cache) (7200 RPM) (SATA)
Raid Option: - 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)
Network Card: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Modem: - No Thanks
Video Card: nVidia GeForce 8800GTS 640MB (By: eVGA / Asus) (PCI-Express)
TV Tuner: - No Thanks
Sound Card: Creative Labs Sound Blaster X-Fi XtremeGamer (Up to 7.1 Channel) (Recommended)
Physics Card: - No Thanks
Cooling: Air Cooled Stage 2 (Silent Artic Cooling Heat-sink (Copper Heatpipes)
Case Lighting: - No Thanks
Round Cables: - No Thanks
User Manual: Personalized Platinum Digital Storm Binder (Includes Paperwork/Benchmarks/CDs/Manuals)
Windows OS: Microsoft Windows Vista Ultimate (64-Bit Edition) (For Enthusiasts)
Restore Kit: Digital Storm Specialized Recovery System (DVD Image Based)
Protection: - No Thanks
Office: - No Thanks
LCD Display: - No Thanks
Surge Shield: - No Thanks
Speakers: - No Thanks
Keyboard: - No Thanks
Mouse: - No Thanks my keyboard comes with a mouse
Warranty: 3 Year Platinum Care Extended Parts & Labor Warranty
Support: Lifetime Toll-Free Platinum Care Technical Support