The tail wheel does attach to the rudder, however I chose to to avoid it and mounted the tail wheel to the fuselage bottom ie like a tail skid, but with a wheel. Ground steering with the rudder is ok ( I fly off grass).

Re: servos , Used standard servos in the wing, and hi-torques for rudder and elevator (hitec 635). Used a mini servo for throttle ( discovered later that the servo mount lugs broke wth vibration !)