Well You dont have to worry any more im hopefully gonna get $300 for my b-day and im gonna buy "
Atta boy...(y) I do hope that works out in your favor..
I'd dump the PSU you're considering like a hot potato. It really can't be any good. An Antec or Seasonic with a lower power rating would most likely put out more useable wattage, and your system wouldn't be in danger as it would be with the Diablotek.
That's as much as I can contribute. I don't speak AMD, ATI Radeon or Asus. Well, other than to say those parts are well thought of.
You're gonna need an OS, I'm suggesting Windows 7 Home Premium >>64 bit<<, which can had for about 80 bucks on sale.
You have too much money tied up in the motherboard. A Matx board, (either Asus or Gigabyte), will work just fine in a budget gaming rig, and you can likely get one at half that price. A full size ATX board in that price range offers SLI or Crossfire for multiple video cards. I'm not reading you in that budget range. Maybe on your next build..
If you near a "Microcenter", you can very often buy a bundled CPU & board for dirt cheap. But you would have to follow what's being offered in their current promos.
Newegg.com has "Shell Shocker" deals daily. Very often one of them is a board / CPU combo. As with all things related to purchasing, you need to window shop all the time, and be patient.