The Four-Star is a sport/aerobatic plane, not even remotely close to a 3D plane. This is exactly what you want after graduating form a trainer. The .46-AX will be an excellent match for the airframe. I can tell you from extensive personal experience that this particular engine works excellent with 11x5 and 11x6 props for sport flying. APC's have performed best for me mut something more flexible like Master Airscrew props might not get damaged as easily. One drawback of the airframe, as RCKen pointed out, is ground clearance.