I'd let him crush A ball a bit first (possibly even start him at Dayton). He needs to taste some success and work himself into a groove. Build some confidence into his game. Once he gets that, then challenge him.
I won't argue against Bakersfield, but he has nothing left to prove in Dayton. Did a great job getting his game together there last summer. He deserves a clean promotion, and not just on 2012 but on his ST performance too, IMO.
They've thrown him out in CF in ST, I've noticed. Played all of last year in RF. Will be interesting to see where he ends up in 2013.