I am going to attempt to build a nvidia rig. Not really sure what I am doing but for starters which one of these would you choose?

http://www.newegg.ca/Product/ProductList.aspx?Submit=ENE&N=100007708&IsNodeId=1&Description=gtx%20750%202gb&name=Desktop%20Graphics%20Cards&Order=BESTMATCH&isdeptsrh=1

I will be ordering 4 of them. What motherboard, processor, RAM (type and qty), and power supply would you recommend?  Oh an do I need risers for this?

I have decided I want to put it in a case.

Thanks