Dual 7770 build?

i sorta wana do a dual 7770 build for about 700$

http://pcpartpicker.com/p/1bEM7 waht i have ?

It would be better to just get one higher-end card than two lower end cards.

Such as a the new gtx 760 or possibly HD 7870?

Here i put a better gpu,motherboard and cpu cooler.

http://pcpartpicker.com/p/1bGhD