Hi JR, I have a Something Extra with an OS 50SX on it. I feel that the 46FX has more power than the 50SX. I fly an Ultra Stick with a 46FX and it weighs more than the Extra. If the control surfaces were a little larger on the Stick than it could hover at maybe 3/4 throttle. You plane / engine combo sounds fine for hovering. I would use a 12.25 X 3.75 APC prop. You should be able to get it to hover around 1/2 to 5/8 throttle. Make sure you practice this at an altitude that will allow for learning and mistakes. Best of luck this Spring.