Many Thermaltake PSUs are not good. I'm not sure about that one, but why take a chance? I'd go for a 750W Seasonic "X" series PSU if you're going to run two GTX660s.
A better cooler would be the Xigmatek Gaia, which I believe is still only $20 but cools as well as the more expensive Crappermaster Hyper 212 EVO. It is also quieter.
Don't forget the optical drive if you need one.
Yea I think I am going to take your advice on the fan, that fan looks really nice. I also forgot to mention that I have an optical drive. Are you sure I will need 750W for two GTX660s? How do I do the math for this?