Well if you look at Frankie Edgar. I seriously think he's at the #2 spot at LW if not #1 which I thought he won both fights twice. I mean people forget he dropped Benson and almost choked him out against the fence.
For people to do what Frankie Edgar has done would be crazy. It would be like Thiago Alves or Dan Hardy fighting at 205, or Jose Aldo fighting at 170lbs. It's crazy if you think about it.
Rashad should do whatever he and his camp feels right. Whatever his body at his age feels like what it can do.