It can be done with existing model technology but the handling qualities might not be very fun. I did a 14', 50lb, twin DF of what became the Darkstar UAV back in '93. Used 2 sets of split "drag rudders" to control yaw. The outboard set was hooked to the rudder channel with a gyro for short period oscillations. The inboard set was independent and was hooked up to an external beta vane for the long period stuff. Also used elevons for pitch & roll. The company chief flight controls expert told me that all roll inputs needed to be led by rudder both for roll in and roll out. Well, when I tried the first turn after takeoff, I had a momentary lapse and used aileron only and the aircraft didn't bank, whereupon I remembered and stuck the rudder in. After that, for every roll action, I matched both thumbs on the sticks. That was a mostly straight wing aircraft, a swept wing might not be as bad. Some of the toughest R/C flying I've ever done.

There's better equipment on the market today. If I were going to try it again, I'd look at incorporating one of the autopilot's or pilot assist modules that are out there. If you're going to try it, build something simple and inexpensive to try first, like maybe an Enforcer without verticals.