Fine idea to start out conservatively with an unfamiliar powerplant You may, in time find a whole new respect for the little .65.
An old , late ham radio buddy of mine (K8BVJ, Jack, from the Fraser Club)?had an old, oil soaked Hog-Bipe that flew quite well with a very high time, well broken in, 65. Of course that is a fairly light wing load, high drag craft , not expected to fly like a P-51.
Just lately realizing how many of my flying friends were also ham radio operators. We forget it was hams who got the RC hobby off the ground. At one time, you needed a ham license to fly RC.