I'd rather recommend the Huntkey X7. It's modulated, 900W and a great PSU alltogether. The Huntkey range generally sucks, but the X7 is a lonely warrior, fighting a very good battle. It's actually on par with Corsair, Antec and Cooler Master PSU's (not the Xtreme Power series).
900 is huge overkill, a quality 600W psu would allow you to overclock your current setup easily. Corsair makes one of the best psu around so you are good there. If you were going to sli, you would be pushing but you would be okay. http://www.bjorn3d.com/read.php?cID=2006&pageID=10203
I would personally go with the HX 750, it is modular and high quality.