They always say you can never have enough pitching. I think Sales arm is fine and his recent rash of injuries has been flukier, they may like the medicals on Paxton too, still you have to figure you only get 32 starts between those guys, if you get more awesome. I think they can easily fill the 5th hole with Bello/Cutter+
3 is a stretch, but I think the Sox need to bring in two guys one of which may be Nate or Wacha.