Freeman can do the job if the blocking is there but Pittsburgh was very physical vs Baltimore and are coming off a bye. It's gonna be gummed up in there. Maybe a seam here and there and the RBs will need to hit them and produce if they want more carries. So I think Evans is the guy and if he can't do the job then spread them out with an extra wideout and rely on this OL to keep Stafford up.
This is an OL game for us IMO. That and Stafford being careful with the ball. He has to keep that gunslinger mentality in check like he did in the playoffs at least early on while points are scarce. Handing Pittsburgh a short field is their best chance to win.