Pearl

I accept that this is what you want to do with your pc9, cant change that but, if it was me i would research the brand of .40 motor that was used in the testing phase. They may have used a ttpro 40 or OS .40 ax or fx, something a little more sporty. These would be my preference. Even a GMS .40 but i dont know whether you can get them in america, they retail in aus for under $100aud.

In relation to scale flying the real PC9 has a turboprop engine. They do not fly at warp speed but do fly reasonably fast. As a point of interest they ar essentially a square aeroplane. 12m wingspan by 12m fuse.