I have been keeping myself afloat doing custom lab work since 1990 and still have clients I work for out of my basement darkroom. You can make a little money doing high quality printing for a reasonable print price, my fiber prices are 12,16,25 and 50 for 5x through 16x20. However trying to do a complete wedding on 5x RC stock in black and white is very difficult to make worthy money. You have to keep the price down so they can order a whole lot of different negs and then if you process in trays like me and try to make good prints you might be lucky to get through 25 negs a day. A wedding job can turn into 2 weeks full time at less than minimum wage.
Dennis