Hi vt-flier......if I am remembering right - the scale location (apoxx) of the skylight may be in the area of where the main spar and aluminum tube reside in the C section of the models wing/fuse area. So.....that may need some additional engineering in that area. I built mine per the instruction manual and wish that I had built it with the wings pluging into the fuse. I thought about the skylight but scuddled the idea because of the changes in that area.

Try and remember to keep it light - this plane will be much heavier than say RC Guys model of the Decathlon due to the use of lazer cutting of thier fuse parts. And lastly put yourself a 1 or 1/2 degree of dihedrel in the wings or your plane will look droopy.
Like mine! lol!