Here's why I think his floor is VG. He already does stuff vets do plus the physical traits. Goating DB to dump passes for 1sts, throws 1 on 1s for WR high points, extreme changes in velocity depending on circumstance and when throwing to tight spots, disadvantages the DB, throws covered guys when a DB's back if turned. He pressures a D with calculated risk and pushes it downfield. Also does it with scrambles to throw which can often result in a big play. Hard to cover that long. It won't always be successful early but it's a great risk/reward template for a guy with his skill set.
We still don't know how well he'll see a regular season field or what that learning curve will entail but there's a great platform here.