$1200 Build

I want to help a friend build a new gaming rig. He wants to be able to max out games.

I don't know if he needs an OS, but I threw it in, if he doesn't need it he can use the extra money for a higher wattage PSU for future upgrades.

http://pcpartpicker.com/p/GrFV

I really like that build and I was planning to build something very similar. If not overclocking with that build would it be possible to save money on a few things that won't be as necessary? 

Save some money by getting a standard  7970 and just overclocking it; it will yield the same results.

I WASN'T planning to overclock (atleast not for now anyway) I just wanted to use my system out of the box the way it came.. Is there much difference between the cooler you put in your build and the Coolermaster Hyper-212 EVO?

Also is there much difference between the Gigabyte Radeon HD 7970 and the Gigabyte Radeon HD 7970 GHz Edition I was just curious if the $60 difference is worth it?

Anyways this is my build - http://au.pcpartpicker.com/parts/partlist/ ~~ I REALLY need to cut cost somewhere....