If you think you can get Edgerrin James, go for it. If he is healthy he can produce big numbers.
Tiki Barber can get 1700 total yards but not too many TDs. Last year i think he got the most of his career. He had like 10.
Stephen Davis will get most of the carries. Also the Panthers will be a running team. Think of him as Eddie George. It is similar situations between those two guys. He is a big RB that wears defenses down over the course of the game. The Panthers schedule is very unattractive. They have to play the Bucs twice and Atlanta twice(they did not score 1 point on Atlanta last season). They face some pretty good defenses thoughout the year Philly, Tennessee, Washington, the Giants...Their bye week comes very early, too so that could be a longevity problem.