New class, where do I quest ?

[Vanroe]

He has Conjurer on 32, so he will not get the 50% bonus. The bonus takes effect after reaching lvl 50 with your main class, afaic.

This is not correct. 50% bonus applies for every level below your highest. So he would have +50% exp up to level 32.

IMO, Fates/hunting log to 15, dungeons (esp daily low level) > Fates > levequests to level.