Having one of each crafter, I can tell you... the only crafter that exceeds my alchemist in making money is my provisioner. The money to grind will definately be EASILY made up. Rare poisons and rare potions bring in ALOT of cash... especially on Fridays and Saturdays where everyone is stocking up on potions for raids.
Once T8 raiding starts en mass, the money will flow. Keep in mind, the BEST way to level up a crafter at this time is by doing writs. With high level T8 rush writs I make 12gp in 6-7 minutes.... and get status.