As stated above, your son's goals are an important part of the puzzle. Last summer as a rising junior my son played on a very good team. They played 3 of the biggest events of the summer and a total of 8 tournaments. The schools he's interested in were only at one of his tournaments the entire summer. If I could do it over again I wish he would have been on a team that would have given him the ability to be in the gym more and less tournaments.
However, there were 5 kids on the team who were able to commit to P5 schools. IMO, at 14/15 the focus should be about getting some good reps against the best competition, lots of practice, and focusing on getting bigger and faster.