Overclocking/Vidcard system

[LoserXLeet]

Hello, I want to build a system using a highly overclockable venice CPU (3000+), and a high performance video card (7800GTX+) with the option of a sli'ing two cards. What cooling system/psu/ram/etc would I need to optimize that kind of gaming setup (Keep in mind, I want an overclock-friendly mobo)? My price range is around $1200.

Thanks for reading!!