The other consideration is transferring credits from the Juco. There has been many threads about this, Many ball players have gone the JUCO route and found out that they do not have enough credits transfer, to qualify, or they did not take the right classes at the JUCO. I do not know anything about the JUCO your son is considering, so I am not pointing fingers. However a large part of that responsibility, falls to the athlete and not the coaching staff.
But to play College ball is a huge commitment. If he is waffling about it, I would caution against it. There are two kinds of Regrets here. I wish I would have played ball, and I wish I would had time to enjoy the rest of the college experience. He has to balance what is important to him. Not anyone else.