Why would you do that to yourself? Why would a 61 year old making $75,000 per year risk it all to start a business where you would have to sink what little you have saved into a business that you can end up "not being offered a contract" after a year? Plus, work 16 hours a day 7 days a week for years...for free? Bad decision. Don't worry. I don't think there is a chance they will put you on due to your age. (I am about your same age.) Keep your present job and your peace of mind!