I've figured that to live and eat and pay my bills every month, I need to do about $160.00 per day, 5 days a week. Anything over that is pure profit. I average about 5 - 6 calls per day depending on the calls. You situation may be different. Average about 80% first time completes. 2 hour windows to work on each job. Sometimes, I don't have the part in my stock but the local supplier does so I make the effort to get it and come back to complete the job before moving on to the next job. Best to do quality work than quantity.
Thanks for the detailed and honest comment. This is the exact kind of information I was looking for! Great work!