Hi James,
We had one of our club members in a wheel chair after a bad motor bike accident. He had a go at wheel chair flying, and what we instantly discovered was that you need a good constant pull on the lines. This sounds rather obvious, but all of us without any physical handicap take it for granted that we simply walk backwards a little if the line tension goes slack. Having a good solid rpm suddenly becomes vital if you do any stunting, and what we had the most success with in powering simple stunt models with was with diesels. They run at a solid rpm and will not suddenly flame out if the setting is not perfect. Now that we have good electric systems available, they are even better than diesels at doing this, so your timing in getting into this right now is spot on.
There are quite a few electric Ringmasters around, so I'm sure that the guys will chip in and help here. It's not a great stunter, with its thin wing and no good place to stick the fuel tank (battery), but it is rather cute and nostalgic. Whatever you decide on, I can guarantee that you will be impressed by electric stunt. This forum is also a wonderful thing and you will get as much help and advice as you need. Good luck with this new adventure!
Keith R