yeah go for a seagate those are the hd's I have ever used and none of them have died out on me. As for you're list everything seems solid. I just wanted to point out that version of vista doesn't come with a 64 bit cd so later on you're going to have to order a 64 bit cd for 10 dollars. it doesn't really matter right now though since you're going for 2 gigs. As for the rest of you're build its all solid believe you me its better to buy a high end 1000 dollar processor when the price has dropped to 300 dollars, I know because i did the same thing. The 4800 used to be like a grand and i got it like 8 months later for 380 I haven't regretted my decision to date, sure its slow compared to the the core2 duos, but that doesn't necessarily mean its obsolete. If you try to keep up with technology you're in for a rude awakening, just stating the obvious. Well GL with you're build and i hope everything goes as planned, one more thing take solace in the fact you're pc is going to own Oblivion and Crysis.
srry for my spelling.