I built mine similarly, I believe I used Sig 4* aluminum landing gear and a dubro tailwheel (the one with the spring connection to the rudder). The wheels need to be near the leading edge of the wing. Mine are slightly ahead of that but this is a long-coupled plane and the ground handling is very good. Some re-bend the supplied wire gear to move the wheels forward but the aluminum is lighter and stronger. The plane flies excellently and handles wind very well.