I would choose to make a pf from him.
8 7
8 11
11 7
13 13
13 10
That is within his cap range. He has some space left probably.
I would start training 1-1 on guards till Hd and Dr are both at 11. Than train passing en OD up and maybe his JS needs a little bit of training than.
His guards skills should in my view be finished within 2 seasons. Than you can start training him inside which probably needs 3 seasons. So at the end of 22. He has over 100 skill points a salary around 50k and you have a nice all-round pf.
SF in my view needs more training of OD, JS, JR and Pa. But I find it very difficult to tell you how your sf should look a like, because in my view in BB is de SF the glue guy. Hardly ever the star.
Only in the dark, we succeed!