Well OD is very important. Driving is the easiest guard skill to lvl up. Both they are very good prospects, especially the 1st, so my advice for the 1st season is to train JS OD and some JR. Next season try to make them more all around guards, training passing driving handling. What i am doing in my training plan (i train 5 players), i am rotating the 3 main skills that i am training when all they are poping up. Dont train for long time only 1 skill.