No you do not take him. The BUcs sorely need players at spots other than RB, and QB. Sorry to break it to you fellas.
Earnest Graham- career ST player who played well when pressed into action. Does nothing exceedingly well, but is a guy who can hit the hole and move the chains. He is solid in the passing game (receiver, protection), but is not much of a threat and does not create match up problems. Started to break down towards the end of the season due to over-work. Not a workhorse, but a guy who can be productive with 15-20 touches a game.
Warrick Dunn- 1, 2 years maybe? Role player.
Carnell Williams- Won't be ready this season, if ever.
Michael Bennett- 4 teams in 4 years. At this point, a journeyman who can be effective in space.
Adding a playmaker at RB is a pretty important need spot, I would say. If the Bucs could land an elite talent like Stewart at 20, that would be a steal. I'm not sold on Jones, but his special teams value alone makes him a good pick in the second round. I highly doubt he will make it out of the top of the 2nd.