re: If Henry wins the Heisman, does he go in the first round?

If I were running an NFL team I wouldn't even consider a RB in the first unless it was around picks 28-32. Only exception is if I'm 100% convinced he's going to be a superstar and the only guys I've personally seen at that level are Peterson and Gurley (ignoring the injury).

Most teams that have a clear need at RB are drafting far too highly to even consider one there. Outside of a team trading up to get him late in the first his ceiling is early second round.