Another YA question :D

Hi all
I'm thinking of making my YA a pure backs academy as in the last 4/5 years ive only pulled 3 players big enough to play as forwards lol

So currently all training and staff are maxed out to highest level and as of next season will be pulling guys with 20 - 30 stars till stored stars run out

YA training is Stam/Speed/Handling not sure on what to do for the last session str/kick/att/def, thinking Kicking.
From what ive seen so far it takes almost a full season to get 10 star players to 10-12 so once a couple have hit that can change to a secondary set of training (think)

so what do people think will this work?
what should my main training set be and what should the secondary be?

or am i just plain nuts and should forget specialising??

Encouraged me to think about swapping...been on Stam/ Def/ Handling for so long...time for a change, I think!