not that i really know anything about this....
My LHBS just opened up their brewery attached to the HBS (Dry Dock Brewing). It seems to me like they are raking it in: The place is always packed, even in the early afternoon on a Tuesday. They don't serve food, just beer. Their beer won a gold and silver at the GABF.
Anyway, i say go for it. It takes balls to do something so risky but you never know, you may be great at it and have a blast doing it. "If you find a job you love, you will never work a day in your life."
Good luck to you.