750w big enough?

Hello,

I am building a new rig and wanting to know if a Seasonic M12II 750w would be enough to power my new build.

i7 2700k
Asus Gene V
Cooler Master Hyper 212 Evo
Seasonic M12II 750w
G.Skill 2x4gb 2133
Crucial M4 128gb SSD
WD Caviar Black 1TB
2x EVGA GTX 465
DVD-R
Possibly a Card Reader

The article i read says for gtx 465 sli need 700w and 62A on the 12v rail. Does that mean 700w just for the gpu? Dont think i will upgrade any newer parts beyond what i have listed... There is the Seasonic M12II 850w for 20 bux more, but if it's not really needed i wont get. What do you think?

Thanks!