Congrats on your new Enstrom. Regarding autos from high altitude hover, my instructor had me do vertical autos from 1500 AGL in an F28A with a recovery to forward flight by 700' AGL. It was supposed to be by 1000' AGL but I was mesmerized by the sight picture of the ground gently rising up around me. By 700' it looked more like it was out to smite me but it was an easy push forward to a recovery. The A model couldn't hover up there. I really liked the machine.
Bryan