I have an OMP Edge 47" (KIT version) and have flown it with an OS 46. That engine is barely enough for that plane in the vertical. It will hover and even pull out, but not with authority which you need when you are coming down and need to hit the brakes. I changed out my 46 for an OS-50SX helicopter engine (not hyper). That made a HUGE difference in vertical control. Totally different plane. It can stop a quick decent on a dime, I mean right now! I changed out the APC 12.25 x 3.73 with a Zoar 12x4 wood prop to get better control of the throttle as it spins up faster and is quicker to respond with just a little loss of power. I already had the heli engine on a UCD 46 I crashed or I probably would never have done this. The death of the UCD brought life into the Edge. I am thinking the OS-55 might be just as powerful as my heli engine.

When you come down you may need to really crank the elevator to keep the nose up.

Another lesson is to always hover directly into the wind.

Good Luck!