I was told by one still manufacturer when I was two years in the planning process that my still would be the least of my expenses and I didn't believe him. I am now close to opening my doors and he was absolutely correct. The professional fees ate up thousands of dollars I did not count on at all. Engineering, lawyers, permits, etc. It can be done on a shoe string, but if you don't have something in reserve for the pile of unexpected expenses it could be a rude awakening. As for it being profitable, I don't yet know. The only thing I know for sure is if you don't try it won't happen.
Cheers