Great buy the motor is well worth $50.00. The Conquest 4 channel radio is 15-20 years old that transmitter should have batteries cycled and or replaced. I think the builder scaled up .40 size plans to make this one. The Radio is 4 channel I thought the "elevators in the wing were flaps. Are they hooked up to the elevator servo? Ifo so they would work more like flaperons.
I would buy a Dave Brown 4-strole motor mount for it and move the motor forward and remove the lead. Light planes fly better.Also you could rotate motor so the exaust is pointing down keeping the slime off your bird.