your statement "When looking at stability, the tail wheel being far from the CG, will make it impossible for the plane to tip forward or backward when going over the bumps."
isn't true. what is far more important (with a taildragger) is the distance between the MAIN LG and the CG.
(if the LG is forward of the CG, but only slightly forward, the airplane will easily nose over when power is applied)
with a nose wheeled airplane, there is NO way the airplane is going to tip over forward, and since the main landing gear is well behind the CG, there's no chance of it tipping backward either.
(on full scale airplanes, a nose over / prop strike is SERIOUS business... a couple thousand dollars for the prop, complete engine tear down (sudden stoppage inspection) cost to repair the runway etc... and this for a fixed pitch prop)
nose wheeled full scale airplanes realistically only only have this issue on one occasion... when the pilot forgets to put the landing gear down
it's almost unheard of on a fixed gear, tricycle airplane.
ALSO
you can easily use the same servo to control both the rudder and the nosewheel steering... it's a very common practice.
Sorry for the long post!