Building a 1300-2000 gaming rig/need Advice.

I've been doing alot of research and have gotten alot of good information from this forum so i thought i would post my build and hope for top notch input  

My build will be for gaming, Crysis and so on and upcoming titles like Fallout. Im trying 2 build it so that i can improve on it in the future. cause i'll have more money down the road but i need something playable now.

the build ive worked up at the moment is around 1300, I can spend as much as 2000... but the parts seem to be in the "in between" right now so im thinking about holding on to some and upgrading later.

All parts are from newegg.com

259.99 - EVGA 132-CK-NF78-A1 LGA 775 NVIDIA nForce 780i SLI ATX Intel Motherboard - Retail

229.99 - Intel Xeon E3110 Wolfdale 3.0GHz 6MB L2 Cache LGA 775 65W Dual-Core Processor - Retail (its basically the same as the E8400 only 20 bucks less, if im wrong please tell me)

259.99 - EVGA 512-P3-N841-A3 GeForce 8800GTS (G92) 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail (including crysis) (im looking to replace this one with a pair of 9800 GT in SLI)

138.00 - CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM Desktop - Retail (two of these)

109.99 - Seagate Barracuda 7200.11 ST3500320AS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s Hard Drive - OEM (in future im looking at raiding and getting a backup.)

159.99 - PC Power & Cooling Silencer 750 Quad (Crossfire Edition) EPS12V 750W Power Supply 100 - 240 V UL, CE, CB, RoHS - Retail

119.99 - Antec Nine Hundred Black Steel ATX Mid Tower Computer Case – Retail

Grand total of 1279... plus shipping and all that.

i used evga for its step up program, but im open for any and all input here guys, and i thank you all in advance for your help.