I wouldn't do that trade. You're basically trading Slaton and Westbrook for Gore and Driver. you don't need driver since you already pretty amazing WR depth. I don't think you should do that trade as it looks like it's just trade deadline pressure the other team may be putting on you.
if you accept, then yes, trade Roddy or Calvin for an AP like player. Although, considering you have Gore and Forte, the only options you could get would be barber or AP. That doesn't seem likely. I would keep things the way they are.