Brian, I think you’re on target for a lot of fun. A buddy of mine (age 65) and I (age 72) bought older TAG karts with pre-09 Leopard motors earlier this year and have been running them, almost once a week, at the local kart track (Sears Point/Infineon/Sonoma Raceway). We both have road race cars (he an old tube-framed Trans Am and me an old Radical), but find the karting as much fun and far more accessible and less expensive. Two suggestions: 1) try to find a full outfit (kart, tools, spares, etc.) from someone leaving karting or, at least, changing classes, and 2) find a kart track. It will be safer, more challenging, and easier to track your times and your inevitable improvement.