Will this rig work with my CPU/MOBO?

This is what I have planned out. I do not plan to overclock.

CASE - NZXT Zero Black/Silver Aluminum ATX Full Tower
Look good?
http://www.newegg.com/Product/Product.asp?Item=N82E16811146029

PSU - Not sure!
Since I plan on having up to four hard drives and two video cards at some point, will I need the 850 watt? Or something more?
http://www.newegg.com/Product/Product.asp?Item=N82E16817341002
http://www.newegg.com/Product/Product.asp?Item=N82E16817341003

MOBO - EVGA nForce 680i SLI 775
Look good?
http://www.newegg.com/Product/Product.asp?Item=N82E16813188009

CPU - Not sure!
I'm seriously debating between the 6700 and the 6600.
http://www.newegg.com/Product/Product.asp?Item=N82E16819115002

RAM - CORSAIR XMS2 2GB 240-Pin SDRAM DDR2 800
Look good?
http://www.newegg.com/Product/Product.asp?Item=N82E16820145034

GFX - eVGA GeForce 8800GTX 768MB GDDR3 PCI Express x16
Will I later be able to get a second one in SLI?
http://www.newegg.com/Product/Product.asp?Item=N82E16814130072

HDD RAID #1 - SAMSUNG SpinPoint T Series HD501LJ 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s
I plan to have two of these in RAID 0 for my OS, apps, games, music, etc.
http://www.newegg.com/Product/Product.asp?Item=N82E16822152052

HDD RAID #2 - Seagate Barracuda 7200.10 ST3320620AS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s
I plan to have two of these in RAID 1 to backup certain data from my main drives.
http://www.newegg.com/Product/Product.asp?Item=N82E16822148140

OPTICAL - SAMSUNG DVD Burner SH-S182D
Look good?
http://www.newegg.com/Product/Product.asp?Item=N82E16827151133

Thanks for the help!