RE: modeltech magic
The Saito56 would work VERY well--- This airplane does great flat-spins!
I have flown many:
OS-50FSR Heli engine 12.25x 3.75
TT-42, 11x5
K&B-48, 12.25x 3.75
OS-46FX, 12x4 and 12.25x 3.75
Saito-50 (dunno which prop.)
The Saito 50 could hover but barely, and the TT-42 was anemic but the others were impressive!