From post #12:

"The way I found area for the wing was by finding the largest cross-sectional area of the wing panel perpendicular to the airflow. I found the thickest point of the root rib, added skin thickness and multiplied that number by the length of the panel. I then subtracted a triangular area to compensate for change in thickness from root to tip. "

I thought I made a mistake too so I checked it, THREE times! Heres the dimensions, go for it.
Root max th: 2.1875"
tip max th: 1.4375"
span: 69.0"
wing area: 125in^2
plane total: 155in^2

I have the plane framed up and simply looking at it head on confirms the numbers. It's all wing. The tail feathers are thin sheet, the fuse is a small bullet shape and the nacelles are buried in the wing and small also. It'll be equipped with retracts.