I suggest you first fly your plane with c.g. on 135 mm and if you don't like you move backward, in a tail dragger you have much better handling on landing with nose heavy tan tail heavy and this plane at 140mm is a little tail heavy

In my first fly she was at 147mm I almost crash it when throttle back she sink the tail fast i had to made a fast landing after many go around finally got her back to the ground after many bounces thatīs why i know the landing gear is strong this is not my first tail dragger (yellow extra 300L, Diablotin, Gp Piper Cub)

For take off with that big rudder you don't have problems a little correction to the right is what she need