Both of them are constant chord wing, just make one rib template and cut all ribs around it. If you want to keep things easy, definitely do the fun-fly (XS) coz the fuse would just be 4 pieces of 3/16" wrapped around one former with 1/4" sq. in the corners. Thats what my panther was and it was great at slow speeds. I'll try to draw something up for you and get it up here tomorrow, it's 2.30a.m. where I am, but I will get back to you.