As a guy who is involuntarily retired (plant closed) at 56, I'm sort of leaning towards full time retirement. Looking at the numbers to try to make it work. At 56, I have been on a lot of interviews, and I really am starting to believe finding a good job at my age is not going to happen. Seems like the hiring folks are very eager to meet me, based on my resume and the fact that I just finished up a degree program, but once I walk in the door and they see a grey haired fella sitting there, the mood changes very quickly. It's a pity, I feel like I have a lot to offer, and don't feel like I've slowed down in the least. Bike shop work sounds like an exceptional way to spend your time, I wish you the best!