How to make a plane wing out of 6 mm think wood.

I am not smuggling drugs.

The main reason why I am making a plane to hold said weight is for
1) To fly things into the air like RC cars and such and
2) The amount of space in there is for the 5 pairs of batteries in parallel for the ultimate test of flying to the offshore key of Sombrero and back as shown in this picture below
Flight path from  Anguilla to Sombrero.jpg