Since RAF works "only" from level 1-60 consider if it is worth it cash-wise for you.

Arguably yes the 35-50 bracket is tedious, but hey once you hit Outlands it is smooth sailing .

Since I live in Denmark I have never used RAF (since it is against some pyramid scheme law we have).
What I have done in the past is to level more teams simultaneously and take advantage of rest XP, one team rest up while I grind with the other that is at max rest xp, then swap when rest is out, rinse and repeat.