because if you look for a way to be an idiot you can find it by picking nits without having the foggiest notion of your subject matter,,,
A kit is just that- A starting point for a finished product. If you build EXACTLY according to instructions, then the engine size should be as recommended (note-that is not, repeat, not "as mandated").
If, like most experienced hobbiest builders and pilots, you start with a kit, and add your own refinements to make it uniquely yours. This includes beefing up the airframe to meet power needs, changing engine size to meet flying style and desired performance, which may include the fact that the density altitude where you live can reach 14000 feet on a hot muggy summer day
When you buy an ARF (bow-wow?), you get something without those goodies. You can make amendments to the structure, but you can't check under the covering without removing it. Thus, tis best to stick to the recommended powerplant.
The Edges I saw go in had the recommended power on them. The wings folded in a normal loop, just as power was added at the bottom. Both airplanes. One folded the right wing, the other folded the left wing. Nothing radical, just the kind of loop you'd expect an aerobatic ship to handle with no sweat.