I'm not certain about your figures (I'll leave that to Chris), but I would advise looking somewhere in addition to Emotiva. Budget amps (for lack of a better word) are just that--budget. If you're looking to push that much power, I'd be looking at Outlaw (maybe), Parasound (definitely), Rotel, ATI, Bryston, that sort of thing.

I am the Doctor, and THIS... is my SPOON!