You say you are not a token buyer:
So concidering that you are promoted to next level, I would suggest to wait until begin of next season as the scout players will have 5 pts more (they are always 6-star-players).
Buying a scout player at that time of the season only makes sense if you are looking for a player with very special abilities and if you are ready and willing to spend more token to give him a personal trainer.
It also makes sense if you are NOT promoted to next level.