3D print RC airplane

This is a 3D printed radio control airplane. I design from ground up. The plane will be printed piece by piece and attach together with screws, 12 mm aluminum bow. Each piece will not be bigger than 180 mm to fix into my printer. I am thinking of 2 wing design (solid surface and empty wing surface and later will be install with some kind of tap). The airplane is still under design working and 80% completed. The cad software that i am using for this design is "Design spark mechanical". I d