1) Well Roy is a small guy so you can train up to 6 small guys at a time. Have Roy+ 2 long term candidates, and 3 short term (sell after a season) candidates.
2-3) Ignore salary...18years at least starter potentiality, Respectable in OD, JR, and at least Average/Mediocre in JS, PS, HN
Buy 5 of them
Now it will take more than 1 season of course to make anyone of these five any good, but then it is a question of cost management. If you have the money buy 19 years old with respectable to proficient in all small guys skill and everything will go faster.
Anyway training just 1 single player is like driving a porsche on the first gear.
