Professional Assassin?
I was just running some numbers the other day as a thought exercise (ADHD at play, I was supposed to be cleaning my house), and it occurred to me the tremendous expense of "staying hidden". I mean, equipment alone would run 30-40k easily, and then O. needs secure internet, burner phones out the tucus, off the grid bank accounts (who won't even talk to you without serious money in play), plane tickets, transportation, safe houses, ID, grease. And that's assuming you don't have kids you need to also deck out and keep hidden.
Really, though, I wouldn't start a business. I'd use it to pay living expenses and tuition.
I've always wanted to have my own school (partial boarding partial dayschool... in the British style) specifically for ADHD kids... but the startup costs there are in the millions. I've run those numbers quite seriously. I've wanted that school since I was 14.
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Hey Jo! I'll start the school, you can be the staff psychologist!!
((I'm also paying my staff through the nose and providing housing in town in my imaginary school. 6 figures to start.)) And what school doesn't need a brew pub? Well, probably most, but not this O.. This O. needs O. bad.