With this team I would actually be less concerned if USC was solid, because it's all about IF we show up, IF we decide to run the ball instead of air it out early.
IF we jump on them early, they will likely fold up as you said, but IF we dick the dog early and let them hang around and start remembering how bad they hate us, it could turn into a game.
Personally, I hope we 'Syracuse' them early and get to spend the whole second half celebrating and arguing over which playoff seed we should be...