Not a big fan of RB by committee. I like having a feature back; but with that said, a RB shouldn't be taking 90% of the carries unless your team isn't running the ball much (especially if it's early in the season and your RB already has knee probs.).
Against an obviously inferior team, though, RBs shouldn't need to get a feel for the game or get into a rhythm... the O-line should simply be able to open holes from the get go.
However, I still I expect Wilbon to get about 20 carries. Ozigbo will get 6 or 7... I wouldn't be surprised if Riley and staff give carries to the FB in favor of Ozigbo, though... Something tells me they're not too fond of Ozigbo.