I think you can both set him up for success and test him. I used to be the guy who would say hit a spec or young new guy in the order, thinking they were our salvation. I am not Cito Gaston or anything. I have just seen time after time young guys fail after a trade in a key spot. They put too much pressure on themselves to impress their new Team/fans.
Ease him in, let him get over that, and then move him up based on results. Not a huge deal, just think unnecessary pressure.