2 things I would change are the 2 things you think may need changing. I'd go with a Corsair or Antec PSU (or something similar), I'm not a Kingwin fan. And perhaps an ASUS, Intel, or even EVGA mobo, once again, not a fan of Gyabite. But you should have no problem finding those. Most of your hardware is pretty decent. Good chance you may need to upgrade your RAM - you don't state what it is.
Here's a pretty decent priced mobo that your CPU would fit. Not sure of the RAM.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813188068
Here's an awesome 750w PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010
You could probably find one cheaper, but it will work well!
Good Luck!
TC
