Power training

[Ljepoje]

I have a couple of questions, that I hope you guys can help me with.

Today i bought 5 youngsters (all 5star players, 18yrs or 19 yrs old and a quality between 28 and 29 perfect/excellent) for ca:9M (free tokens converted into £) and thought/considered to PT them until the end of the season (last game scheduled the 9/3)

So, how much time&packs will I need to get them at quality 30/ 31 or maybe add a *star (if it´s possible)?

Here are some screen´s.







Ps. I´am a lvl2 player