I decided to have a one pice wing, and I went for a symmetrical airfoil NACA 0009;
Balsa sheet 1.5mm for wing, 25gram glass both side. Once sheets join together, I glassed one side dope, this side would go inside. Followed by outside glass applying G4;
Surface hinges, for both flaps and ailerons. No horns coming out of wing and servoes would be linked to horns already installed on flaps and ailerons using their own thickness