I think its too much engine. There have been lots of those planes at our field and the plane can be quite fast with a 46 in it. BIgger than that and you will be fighting the engine trying to get the plane to slow down to land. The bigger prop will want to just keep pulling the plane along even at idle. I had a plane with too much engine on it and I had to cut the engine to get it to land, (unless it was really windy). [8D]