I have started a new team last season just to have a team for testing some things.
I totally dislike the new system because of no interaction in transfers, but concerning tokens, you surely can even spare them if handle a bit smart.
Never paid more than 2-3 tokens, mostly 1, and had a 93% team end of first season. 79t player, gave some greens to own young fast trainers, bought a mix of old/young/middle. Sold oldies and middle-age end of season. Went into season 2 with 8 players 19-22 yo. Bought 3 for missed positions 1 token each (young, 72-77%). Will maybe buy 1-2 oldies when I ll have money.
I did watch some adv, by far not all possible.