I would pick either Williams or Tate, although it seems that Tate gets a lot of goal line work so he will end up doing better. Bush only really plays when DMC is down so I would avoid that.
ESPN 12-team non-ppr
QB: Big Ben, Dalton
RB: Foster, FJax, Martin, Hardesty, Daryl Richardson
WR: Cruz, Nelson, Moore, Burleson, Gordon
TE: Rudolph, Chandler