this a good build?

i only need a pc that will run games like cod4, css, tf2, etc. at high details and get good fps (like 80+). i play on a 20" cinema display so resolution is 1680x1050.
this is the rig i'm looking at building currently, because i don't need anything super expensive and crazy, just a pc that will handle the games.

processor: http://www.tigerdirect.com/applica [...] CatId=2396
motherboard: http://www.tigerdirect.com/applica [...] CatId=2050
hard drive: http://www.newegg.com/Product/Prod [...] 6822136073
memory: http://www.newegg.com/Product/Prod [...] 6820104030
power supply: http://www.newegg.com/Product/Prod [...] 6817341010
graphics card: http://www.newegg.com/Product/Prod [...] 6814130380
case: http://www.tigerdirect.com/applica [...] CatId=1842


later, i'm going to add another 9800gt from evga and sli them. I'm also going to overclock the cpu to run at 3ghz+ after i add a cpu cooler:
http://www.newegg.com/Product/Prod [...] 6835186134

and i'll add 2 more gigs of ram(if i even need it.

is this a good rig for what i want it to do? i also do alot of photoshop editing.

i just remembered that i probably wont need more than 4gigs of ram max. for anything i'll be doing.