I don’t believe there’s a major leaguer who can stand at home plate and threw a ball over the center field fence (see other post about distance and velocity). If your son has this kind of ability you don’t have to ask what to do. All the top travel teams would be pursuing him. On the flip side 7.7 doesn’t match up real well with 5’10” 165 as a position player.
I saw one come very close. I saw (my own eyes) Jackie Bradley Jr throw from the warning track in CF (375' at Petersburg Sports Complex in VA) to home plate when he was a rising high school senior. This is why nobody runs on JBJ today. He's got a hose.