RE: changing c/l models to rc
I did a Ringmaster to sloper many years back.
Miserable failure.
The wing was too thick.
I tried a Flite Streak with a Speed 600 and 7 nicads.
A real dog!
OTOH, with a motor, like a .25, such planes should be really really fun!
I have a kit for the Ringmaster waiting for inspiration.