It's really unbalanced . I
highly recommend you to build your own PC. there are many videos that will help you step by step.
back to that build.
The PSU is really a overkill. Same goes for CPU. And if you're not planning to overclock your CU , you don't need a CPU cooler and Thermal paste.
A GTX 650 ti boost is currently on sale at Newegg for a REALLY low price. Fill up the rebates form , and get it for $110.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130914
you get in-game cash for Warframe and Marvel Heroes too !
And for the CPU check this article for help.
http://www.tomshardware.com/reviews/gaming-cpu-review-overclock,3106.html