Single motor tailsitter with "split Rudder"

I have a Delta wing single motor tailsitter with split rudder - similar to the Pogo plane. Half of the rudder above fuselage and half below. More precisely - one rudder above and one rudder below fuselage.
So the plane has 4 independent control surfaces with one servo for each: 2 elevons and 2 independent rudders.

The issue in this airframe is: in Ardupilot tailsitter only the elevons (ailerons) counter the torque from the motor.
What would benefit my airframe is using all 4 surfaces, including the split rudders, to counter the motor torque
Is it possible to do that in Arduplane? If so, what settings/parameters should I use?
I’d really appreciate any advise.