I really suggest the setup that TRDCorolla1 gave for you. He told me what to get and how to do a lot when I built my computer, and I've been very happy about it. That setup that he has for you is quite good for that amount of money.
Hey MercSniper I have that exact Celeron processor you were talking about earlier, it is shit. I would not get it. Definately go AMD. And if you get a case with like, 450W that would be enough, even if you get a powerful graphics card.