GERALDO; Great looking planes you have there. I am working on a Guillows P-40 and a Sopwith Camel. Maybe Electric. What did you use it the Thomas Morse Scout? Motor, Batt Gear drive? Think the Sopwith will be a good project.
Guillows older kits did have lousy wood and die cutting but I have built many of them during my modeling days, some flew some didn't.
If they really want a challenge build a Joe Ott kit with cardboard formers and bass wood.

Dasflugmodele