I do have experience in this, and became exhausted just reading the thread. DUmmie, I lived on 4 hours of sleep a night for a very long time. While we were successful, we never got rich from it. Food margins are razor thin. The person who mentioned $20K net, that you sniffed at and pronounced unacceptable, was being optimistic and generous.
Anyway, this is never going to happen, so I'm not going to waste time with advice.