question about unlocking job

[Raldo]

but having to level every class to 30? it 's a real pain.

So... don't then? You don't have to unlock everything. Or if you feel that you do, there's zero urgency to do so. Spread it out over the course of a year. Personally, I suggest getting a job to level cap (once you find one that appeals to you) rather than trying to do everything at once.