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 did not use any calculation or software analyzer to design this plane, just my thinking and size proportional scale. I hope this plane will fly when i finish.
Updated 20-03-15: Version 2 (Re-design horizontal stabilizer) please see attached latest photo for how the design look like and i will upload STL for the version 2 later.