Avi
Do you know if it is a "C" model or an "A" model. I would be reluctant to change the tail from the simple alum "hoop" to tailerons. The factory configuration produced a really sorted flying experience with the elevators and ailerons. A little programming to give some "flaperon" (10 degrees) at max elevator deflection on takeoff produced a smooth liftoff. The planform of the 16 allows predictable "high-alpha" activity, so flaps on landing were not necessary for that kit. I would focus on keeping it light, and maybe sourcing one of the latest generation turbines which are smaller and lighter than the -70 if possible. Good luck with your efforts, very noble of you.