I started on mine early this morning (3:30 am). So for I have the wing and all other surface on. I did a comparison of this plane to my lil banchee. and the cap is little larger. I am going with the 450 setup. I will be playing with the CG once I get the servo, ESC, and motor attached as I modified a little tray under the plane behind the gear to place my battery. I got the ideal from my lil banchee as that is where the battery is place. I post pic once I am done.