I'd search for a 206 that goes pretty quick and put an IO550 in it. The overhead induction one tho not the standard. Handles the hot weather a lot better and gives you a nice increase in speed, and climb/takeoff performance. Throw the Stol Kit on her and you'll be away laughing. Being only short hops you wont need long range tanks and they are a lot tougher that a 210 for the steep, rough bush strip. I dont know anything about the A36 but with retractable gear they prob arent ideal. The airvan is tough, but as slow as the second coming of Christ. Good, easy to maintain machine tho.