RE: Great Planes Reactor GP/EP 3D ARF .46-.70
I don't think you'd want to do a pull pull simply for balance issues. I originally used all Hitec 225MG servos, and went to a full size Tower TS126 digital on the rudder just for a little more weight in the tail. Mind you, I didn't add any lead anywear, and was pretty much in the middle of the CG range with the Saito 82. If you want it more tail-heavy, other measures will have to be taken.