You won't last long in arenas without pvp gear, and all 70 bgs will be full of s3 welfare smacktards, so yea grind honor pre-70 if you can, honor comes in as you earn it, no waiting a week for piddly arena point income and by the time you can afford anything good it'll all have rating reqs or better will be out lol

Definently take alch on Pala if for nothing else than the Alch Stone trinket in case you have to use either healing or mana pots while taking, get the most out of the pots. Selling cooldowns would be good too, and make sure you have an Ench in there somewhere.Tailoring's a good idea for early cloth gear on the Shamen(since leather caster gear is non-existant pre-mail at lv40) and at 70/375 you can sell off Spellcloth cooldowns for more money + craft some nice caster gear if you bother with a non-mail caster set, if not, crafting stuff like Spellcloth set for other casters for profit :p