One more thought regarding the mirrors and the bumper. If you like them, there's no reason to take them off. It really doesn't matter whether they were original or not, unless that's more important to you. There are no set rules in this game. It's each to his own.
If you're planning to leave that camper shell on it, you'd probably want to keep the bumper and the mirrors. At least I think I would.
Good luck with whatever you decide.
