With his size and an 82 on the mound at his age I don't think it can hurt to hit one or two. If nothing else he'll get a "feel" for how they work and be more comfortable the when he gets further into the recruiting process. My son went to his first showcase the summer after 8th grade. He and a friend were the only 2 8th graders there (this was a camp at a D1). Several D1 coaches commented that they were impressed by how the boys weren't afraid of stepping into the IF against the "big boys". They got no real "recruiting" exposure from it (they were both 4'10 and maybe 90 lbs at the time) but both boys will tell you that it was probably their favorite showcase they ever attended.
Now for the big question......RHP......or........LHP??? 