Then you'll want to experiment a bit with props...

If 3D is the goal... long low pitch is the prop. The longest, lowest pitch widest blade prop the .53 will swing will give the best hover and torque roll results.

The U-Can-Do is capable of decent speed too... but you can't have both top speed and maximum 3D performance. We don't have in-flight variable pitch propellers. (yet... someone will make one work eventually. There have been plenty of adjustable pitch model propellers... just none in-flight adjustable.)

I've seen a U-Can-Do .46 with a .61 2-stroke on... he had it propped for speed. (which is not a good idea with that large of an engine... flutter is a constant problem) His 3D performance was very poor, even though the model is very light. Simply the wrong prop.