It sounds like you got yourself in quite a quagmire. If you like the work so much, maybe you should consider building a business that will allow you to hire men to do the work, that is starting to wear you down. The industry is tilting towards residential service and it is becoming a place where you can actually make decent money. I have had the blessing of developing a company that allows me to work on it instead of in it. It has been exciting to see it evolve into a nicely structured service business.
Just a thought.