I can tell you that Brandon Sullivan is a class guy. He has run an organization that caters to high academic players - Headstart Showcases - and helps get them into colleges.
I don't know much about his team, but if Sullivan is involved I'd guess that it will be a good situation; particulatly if your son has good grades.
In any team I was consider playing for I'd check to see which tournaments the team will be playing in. If they are the high profile ones I'd consider his group seriously.