I like Q a lot for this year. Anderson is hurt, so he should see more goalline work. Bell didnt look all that great in his first preseaon game and is now a couple months behind everyone. The job is for sure Q's.
I would actually look to trade Faulk. SJ may get more carries than people think, and if they want to keep Faulk healthy, they may pull him on short yardage and goalline situations.
That may hurt your RB depth by doing so, but I think SJ is a decent bye week fill in if he's getting 10-15 touches a game. If you trade Q, like said before, you are really hurting on the bye weeks.