Star potential is fine, driving training is fine; this thread is going way off-topic.
What strikes me more than anything is that the first two guys are gonna be lagging way behind the third guy when it comes to range. So while you're getting that OD up, you should probably also think about sprinkling in some outside shooting here and there. I'm not anyone who should be giving advice about "how" to train guards, but be sure to rotate your training around and you should be fine.
On a side note, I like the levels of SB on both of the 18yos, but that's probably just me
