I would suggest doing 1v1 (forwards) training first (until DR is around 17), it quickly trains DR, HA and some JS and IS too, so most of the offensive skills. Most importantly, because of the increased HA it will enable elastic effect for OD and PA, making it a lot faster to train those skills. If you want him to play (defend) as a SF, I suggest training ID until around 14 after (or before) 1v1 training, because it will train very slowly at a later age because of his (lack of) height.
Then afterwards you could train OD until around 20, because that will be slow at later age too.
You'll be a long way at this point, and from here you can train JS (forwards), PA and JR until the levels of your preference.
It's possible to give Ersin and both your MVP's optimal training minutes, you can play each of them for 48 minutes in 1 game in a week. There are a couple of ways to make it work, you can probably find those here on the forums.