1000$ gaming build for me

I'd like to have this monitor:
http://www.newegg.com/Product/Product.aspx?Item=N82E16824236047

I want to overclock and have max two cards
I was thinking at AMD, as they seem to have the best price/performance ratio.
I was also considering a 5750 or a 5770.
Minimum 3 cores
My purpose are mainly gaming (FPS, GTA, etc.) & web browsing
Maximal budget is 1200$CA (I live in canada)
I may wait if it worths it, but the sooner, the better

Thanks for futher help & reading.