So guys and gals

My squad is made up of 2 complete teams, one being better than the other which I use for the league.
This league team has three 6 star players and the rest are 5 stars (a few level 39).
My 2nd team is made up of 3 & 4 star players.

I am going really well at the minute, top of the league and won the 1st leg of c/league qtr final.

I am just debating whether to continue to buy 5star players or save cash & tokens for the start of next season as not sure if I can get new 5star (level39) up to 6stars in time, I don't power train just let them develop naturally.

What do you all think???