Of course the obvious standouts---Rivers, Fitz, Gonzo, and MBIII---will produce. Rice...eh...Im staying away from the RB situation in Baltimore all together, but of the lot, he would be the best pick. Evans may benefit from all the attention TO will get on the other side, but I doubt it, TO will get most of the looks. He will have good games here and there, but nothing too consistent.
You may be able to package some of your RBs and trade up. An extreme move would be to trade Fitz and get two, maybe 3 players in return...like I said, extreme...just a thought. Good luck!