go for the 970 as 760 will be a bottleneck for you in the future and some games dont render well on sli so a single more powerful card is better and the framebuffer on the 760 will also be a bottleneck as sli doesnt add up the memory
swap out the cpu for fx 8350 and the mobo for a asus maximus 4 and get 1 stick of corsair vengeance 8gb memory all parts are compatibles and reasonably priced on flipkart
swap out the 750ti for an r9 290 as they r coming real cheap for around 250$ and get an i5 4690k with the cooler master hyper 12 evo and that should last you a while
p.s
get a gtx 970 if it fits your budget
700$ aint going to be enough to out perform the next gen consoles as games are better optimized for consoles and i think you might be able to do some moderate gaming on this by that i mean high or med settings at 1080p or maybe even 1440p
http://pcpartpicker.com/p/GF4LjX
p.s its over your...