Another way to measure your wing separation is to take a front view, measure the wing length vs separation and compare that to your plane. It will give you a ratio without involving the fuse. I say that because you may not know if your fuse is the proper size.
Very good point.
I'm getting ready to start this kit, and I believe it can be worked with to make it look much more scale than the instructions intended. At the $119 I paid I think it's an unbelievable deal for this size airplane. Man there's a ton of wood in the box! The balsa alone is almost worth it.
Anyway, stock may not be so scale, but for the price, I think you get a great "canvas" to paint on, and there's no reason it can't look like one of the pricey perfectly scale kits that set you back $300.
I'd start a build/mod thread if anyone would be interested. Maybe we can all rewrite the manual and make this kit fly off the shelves.