Where are you located? If close to Houston, you could ride along with me on a couple inspection? Perhaps you are the best person to answer your question.
Things to think about…
Do you want to be the technician or do you want to run the business and have a younger guy do the inspections?
If my memory does not fail me, the oldest guy in my class when I was training was 72 years old. Great guy, very knowledgeable structural engineer, but honestly couldn’t really walk the roof if needed or go in the crawlspace. He quit after 1 year with only 1 inspection. He also did not know how to properly market himself.
Give me a call 713-568-8184