The wing span of both wings is 38.5" and the chord according to plan is 8". The lower wing loses 2.5"x 8" where it mounts to the fuse. Without increasing the chord or enlarging the ailerons that looks to be just a little shy of 600 sq in. (Tower often has erroneous information published in their catalogue. I don't complain because no other source gives us as complete a picture of our hobby)
I can't get it on a scale yet because it is at work. I can't progress too quickly on it as the business doesn't run itself.