Neither is worth it.
if I were going to boost something or spend the money either way i would level up myself then treat myself to 3 big fat tokens when I hit 60 as a reward and to keep myself looking at the prize ahead.
Make your alts, get them to a rest area, and leave them till they are fully rested. Put on your heirlooms and talk to Cromie. WoD had faults, but the quest chains were on rails. You’ll be 49 before you finish three zones. If you run dungeons, you’ll be done in no time.