Fantasy football question?

i was wondering if i should trade Justine Gage-Tennese's WR for Joseph Addi- Indianapolis's RB...reasons why..i have T.O, Randy Moss, and Roy Williams...my other runningbacks are Ronnie Brown and Willie Parker...my benched WR is Gage and my other running back is Rock Cartwright of Redskins but hes just a kick returner pretty much...what should i do