With RaF you generally want to just get the most out of it while you can.
But for normal leveling it is generally good to at least do the gathering professions and enchanting so you'll be ready for when you want the rest up, if you do.
Tailoring can be easy to do as you go too with all the cloth that drops.

Generally it depends how fast you want to level, if you plan to level more teams during your RaF, and if you mind going back for them later.