ohh that's right. I just opened the case and saw 580w under the +12v things and thought it must be for them. Ohh well... still leaves over 35A for the +12v even if the +5v and the +3.3v would take the max of 155w.
Well, I'd call the BFG a good choice. But a god choice, no. LOL!
Any of the power supplies that have been posted here will work well for your system. It really boils down which features you're looking for and how much you want to spend.