Get these instead:
WD 160gb 16mb cache
: Its OEM but your mobo will come with a sata cable so there is no need for the retail. The 16mb will make a difference too.
: I don't know about the passive cooling gigabyte uses on their gpu. Evga also offers an upgrade program where you exchange your current gpu for a better one for the difference in price you paid for the first one. Ex. say you got that gpu and wanted an 8600gt (coming out in a while) later and the price for it is $200(just guessing) then you would pay $90 for it after you sent the 7600gt back to evga. It only lasts 90 days after purchase though.
: All your missing is the light scribe which as i understand it isn't worth it. Up to you, just pointing it out.
Never go with the psu that comes with the case (especially a $40 case
: Very good psu for the price.
Every thing else looks good. I understand your in a budget and went with the pentium instead of a C2D, but the e4300 should drop in price in a month or two after the new lower end conroes come out. If you can wait.
Edit: don't get two 80gb HDD's for raid. One, your board doesn't support raid, and two, its a waste of money when you could use it for a better gpu, cpu, or more ram.
edit edit: didn't see your mention about the e6420. I guess thats good but why waste money on a cpu when the newer one is right around the corner. Unless your going to use the pentium in another build.