Well, after more research I am back to going gas with my LT-40. I've had my eye on the new OS gas glow 10cc engine. No ignition module nor battery and a 50-1 gas mix. It is described as for a .40 size aircraft. So with some throttle management it may do well on my model. The engine mounting is the same as the .55AX. So it is a done deal I just have to wait for availability which is late May.

I have lots of Stihl equipment for tree and firewood cutting. They use the same gas mix as the OS so I already have the fuel. I know how horrible it can be to transport fuel mix in an enclosed vehicle, not good. I have done it on a few occasions. My transport will be a pickup truck if I ever transport the plane. I have a backyard runway for flying.

As for avgas, I have been using it in a power tug at the airport for years. Never a problem. I sump the fuel tanks and just dump the fuel it in the power tug fuel tank. I'll have to consider avgas for the OS engine.

Thanks for for all the tips and suggestions in this thread. Good info.