Lee R.,
While the G-62 will fly this plane in circles, the vertical performance will suffer greatly. 3D is not the only reason to have plenty of horsepower under the hood. A lot of IMAC maneuvers require plenty of thrust for good vertical performance. If you don't already have the G-62, I would seriously suggest choosing an engine with more power. The ZDZ80 single is a great choice for any SA plane up to about 25 lbs. It has almost twice the HP of the G-62 and weighs about the same. This plane is a big investment any way you cut it, IMO you might as well do it up so you won't be disappointed with it down the road.