depends on your plans for him. Some additional JS would be nice, but if you're training on a single position, it might be better to wait a little further. He's far from finished though, so you can work on almost any (outside) skill and improve him. But you could determine what to train if you know which position he's supposed to play in the future.
For a PG, train his OD and Passing. For a SG, train his OD and JR. And for a Combo Guard, train his OD, Passing and JR about evenly (perhaps a little more OD)