I'd get 1866 instead. cheaper and fast still.
How about a R9 280x? 770 was overpriced, but now the price has fallen a bit.
If you are getting that monitor then SLI asap to achieve 120+fps.
Thanks for the RAM recommendation!
I decided to go with a gtx 770 4GB instead.
I'm not going to SLI just yet, I think this Monitor and GPU will suit my needs for now...