Should I start 3 wide Receivers or 3 running backs?

Laurence Maroney and Marshawn Lynch will do 100% fine for you running the ball week one, but you dont know how many touches Stewart and Williams will be getting. You have to the best WR's for fantasy this next year in my eyes, for you are set there, except having Roddy White on the bench is interesting, because he should almost start over Calvin, I would defintely play White.