Yes, mount the servos inboard. I have mine setup with the qaud flaps and a 537 servo moves each surface. I almost never use the flaps or spoilers. If I had to do it again, I'd just build it with the strip aileron option.
BTW, I have a G-26 on mine with 3.5" of the nose removed from the fuse for a perfect balance. The G-26 is a great engine for this plane. It will sustain a vertical climb at half throttle and flat out haul at full.