The Evga 750i's are great boards. But, if you are planning on not SLI-ing later on, or switching to an ATI card, I would go with a p45 chipset board, such as the Asus P5Q Pro. p45's oc great, and that one is a great deal price/performance wise.
With ram, I would without a doubt pick up Gskill's (2x2gb) PI Black ram (DDR2 800). They can oc quite well, and can run 4-4-4-12 timings at 1.8v!
But, if I was you, I would pick up the P5Q Pro instead of a Nvidia chipset. If you ever need better graphics, you probably would be better off upgrading to a new card anyway. Intel's chipsets rock when it come to ocing and performance, performance, and power consumption ratio.
