I assume you already have a case that supports ATX psu size or microATX mobo?
How bout Windows?
It's hard to say much since we don't know what the purpose of said computer is going to be. It looks like a nice budget build, but without knowing its purpose I can't comment further.
Also, if the mail-in rebate on the PSU/Graphics card combo is from Corsair, be warned, their rebates are a pain. Usually they make you pre-register through a website before you send them the paperwork, and then processing the paperwork is pretty slow.
