Looking advice on parts to complete a cheapish core i7 build

I recently bought a core i7 from micro center while they had them for 200, and I was finally going to go ahead and finish the build. I am planning on re-using the drives from my current machine, and was looking to get an opinion before I went and bought the parts I am looking at for this build.



APPROXIMATE PURCHASE DATE: By Friday at the latest, looking to keep the price below 500$ after MIRs

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, Photoshop, MS Office, Movies, Internet
PARTS NOT REQUIRED:
Monitor
CPU
300 gig Hard Drive
DVD RW Drive
GTX 260 Core 216

PARTS I AM LOOKING AT:

NZXT LEXA Blackline

COOLMAX CU-700B 700W ATX Power Supply

OCZ Reaper HPC 3GB (3 x 1GB) 240-Pin DDR3 SDRAM DDR3 1866

EVGA 141-BL-E757-TR LGA 1366 Intel X58 ATX X58 SLI LE

Scythe MUGEN-2 SCMG-2000 120mm Sleeve CPU Cooler

PREFERRED WEBSITE(S) FOR PARTS: I'm partial to the egg, but open to suggestion

PARTS PREFERENCES: None

OVERCLOCKING: Yes SLI OR CROSSFIRE: In the future

MONITOR RESOLUTION: 1680x1050

ADDITIONAL COMMENTS: I also have a case/psu combo, but I've had enough of the thing, and would like to change it up. Here is that combo Antec Sonata III Case with 500w psu

Also, I may get a second 260 later on, would this be a good idea?

I appreciate any help I can get, and I wanted to say that I am willing to change just about any of these parts. Thanks.

The better timings on this kit will help it perform significantly better
http://www.newegg.com/Product/Prod [...] 6820220366

That PSU recieves my HELL NO, that little red switch means no PFC and its not 80+ certified so it hasnt necessarily passed a 100% load test, this one costs $15 more after MIR and wont blow the crap out of your system, if you plan to run SLI though you should go up to the 750TX just to be safe.
http://www.newegg.com/Product/Prod [...] &Tpk=550vx