On the futaba radio you can program a mix but I will recomend a y conector with the reversing module. Because in that radio when you do the mixing you will only have trims on one channel. ie. If you mix the 2 and the 6 and you need to trim your elevator a couple of clicks. you will only be controling the #2 channel and not the #6 channel. you will have to use the knob for the flaps to adjust the other servo in the elevator. I have the same set up that you have same radio and plane and I am using a y reversing module.