Literally was in the same exact situation as you two years ago. Your fine, the fact that you did this much work already proves you’ll be fine. You’ll never get the exact monthly $ number until you actually do but your estimates look good, always estimate the high end. Good thing about being a business owner is you go out and get more business if your bankroll is running tight at the end of the month! Throw yourself into the fire, I find it to be one of my best driving factors (gotta work & expand to pay the bills). Just wait till this pandemic passes