I just call Andres Andersson who is one of the partners of C.A. Models, about CG

He told me this place your CG at 33% to 35% of the wing chord measured just aside the fuselage to start then you can go up to 45% it will depend on how you feel the airplane.

Also I ask him about installing two mini-servos (Jr Digital 80 Oz) at the tail and a pull pull ruder in the tray. He told me that putting the battery pack at the front of the plane should be enough to get the balance around 35% to 40%.

When I saw your pics. I assuming your looking for full 3D stuff.