Whats your target with the player, i could imagine him as a PF or maybe even an SF because of his hight. SF wouldn't be the easiest way and should require a lot OD and JUmpshot training. PF seems a bit easier for with a big man rotation, who get JS a lot later.(but SF sells good so the hard work could be worth it^^)
So the next question is, what are your other trainees, or did you still have the money to buy 2 new ones because you shouldn't waste your training and with single Position training you could still train 3 guys.
PS: i hope you don't have to throw games in a bot league,and can still win with an exotic lineup :)
PPS: And play some tie to surprise maybe one or two cup opponent with an ct.