Enoch will play 5-10 minutes at least I'd assume. He's a true post man. That's a big need, and considering that he is likely our starting center in 2016, we need to develop his game as much as possible.
I sincerely hope Brimah can play more than 20 minutes considering he averages 26 minutes this season. I'd set the bar for him at 30+ minutes. He really limits other teams guards by making them settle for perimeter shots.
You're also selling Facey short. He averaged 21 minutes this year. With strength and conditioning, he can really help us on the boards and he has a nice midrange game that he hasn't really tapped into. He's KO's guy, I trust that he can/will develop Facey into a productive player. He trailed Harris in win shares by only .5 this year.
Calhoun and Nolan are question marks for me. Nolan is really only of use when pick and roll defense is big. That's what he defends well. I love Calhoun, extremely loyal and unlucky kid (injuries). But his minutes will always be inconsistent because his mechanics on his jumper aren't ideal leading him to be streaky.
You didn't even factor Cassell in. Unless Adam Smith transfers here, we may be really depending on him to become a guy that can come in and shoot the 3 ball. I don't want to project his playing time, because it will depend on if he can be more consistent from 3, and sharpen his handling/agility. But I like his age and control. The IQ is there for him.
Thinking both Miller and Harris come here is a waste of time. It would never happen. It's not in anyone's best interest, whether its either of them, or Facey and Enoch as well. Shonn Miller fits the bill more. He plays bigger, and I think he'd really help Facey in practice, as well as aspects of Enoch and DHam's games.
Don't bother planning minutes ahead of time. They'll be earned, not just given. Depth is important, we learned that this year. Competition, not just in games, but in practice too, brings out the best of people.