You have a 20 year old HOF guard, and a 19 year old PA guard, both are 6'3-6'4 height. You have no 18 year olds.
I'd say, just train those 2 guys on guard skills for the whole season, and they should be helpful for you in winning. If you don't win your league and promote keep them and do for 1 more season if your draftees suck. I'd also recommend that if you planned on keeping either of them, and not selling them either, to only look at 18 year old draftees, that fit a height of 6'5 or shorter, possibly some 6'6 or 6'7 guys if they have higher starting skills in the big-man and not horrible in the guard.
The jerome oliver guy can even be your 3rd trainee, and sold closer to playoff times for a nice profit.