Wow sounds like you have your hands full especially having a house fire on top of everything.
I’m 74 but my medical issues is what keeps me from putting no more than 2-4 hours a week working on the Dart. I have a bad arthritic ankle that the surgeon wants to fuse it together, so I have no left to right motion, which will make me lose my balance. Severe arthritis in my hands. Severe arthritis in my right hip. Recently the day after Christmas, I spent 18 hours in the emergency room because I couldn’t walk anymore due to really severe back and leg pains. This issue has been bothering me for the last three months. At least my mind is still intact.