That's WAY more than enough. That power supply could handle the i5 and TWO 670s in SLI.
Go for a quality 550w unless you think you're going to get a second 660ti at some point. Also, on a 212 +, you should be able to hit 4.4 without bad temps or voltage, unless you got real unlucky with your chip.
That... actually looks quite good. Provided you get a new video card. What RAM will you be using?
Thanks for the reply. I totally forgot to put the ram in there the first time I posted it up. I've edited it.
G.SKILL Ripjaws X Series 16GB 2x8 59.99
A new video card might be on it's way. I got the card from a friend that upgraded to a 550 Ti, I'm coming from a 9000 series haha. Depending on what deal I can get on Cyber Monday. I'll look for a good 550-650w as you're recommending as well.