Yes please send it. The wing section is @14% with a 27.7" root cord as stated. That works out to a height of @3 7/8". Top and bottom spars will be 1/4 by 1/2 spruce. Root rib will be 1/4" lite ply with a doubler at the tube locations to distribute the stress. The wing sleeves will fix into this root rib and 2 others that will support the retract units. I plan on filling in with balsa between the spars and the sleeves from the root rib out to the first retract rib (1/4" lite ply) to handle the compression loads. A 2 1/2" tube would be fine. 3" probably too big.
Thanks

Dave