Do it man. Live it.
Do the research. Like Kurt said, you would have to be health dept. compliant and have a license for each place you sell.
There are some guys on here who get licensed on two or three states, but not much more.
Become amazing in your one location first.
2 - WSM 18.5, 1 - WSM 22.5, and 1 - ECB Smoke n Pit.