If you are running a dungeon team make your tank a tailor. Alchemy is the cheapest crafting profession to level and lets your characters start 85 with decent trinkets. Make sure you have one disenchanter on the team. My main team I just threw herbalism in as my filler profession for the haste proc, you can level it on a toon in just a couple of sessions once you have flying and I like herbing while I watch movies so that worked for me.