I have got two SpringAir 404 for the main and plan to use a "front" 600 for the tail, probably with a dedicated servo.
The link they have build between the rudder and the tail wheel is too ??? I don't find the appropriate word ;-)
To solve the need for all those servo reverser, I have got a "Emcotec DPSI RV Mini5 magic": dual a123 RX packs and 3 reversers included: flaps, elevator and rudder/tail wheel.