Wing Section

I'm building a completely 3D printed 60" RC Tow plane. Just for fun. This is the first part. I figure it will take 6 of these wing sections, a center attachment section, and 2 wing tips to complete the wing.
The carbon is for the leading and trailing edges. the big inprinted tube is to support the upper and lower skins.. I will print some joiners for it also before assembly.
If anybody wants to contribute to the designs incorporated in this aircraft you are more than welcome!
Any suggestions are appreciated.