The nice thing about a subject like this is nobody can ever make sarcastic remarks about overpowering the aircraft. After all, the full scale subject was an exercise in going as fast as possible by forming a single seat aircraft around the most badass engine they could conjure up. 440mph on floats - imagine how fast this thing could have gone with retractable mains. How fast would Rare Bear go on floats..? Not 528mph I think.
I'm not going scale here, just inspired profile/sort a scale is all. I wanted a cute low winger with a wing that resembled a Cub plan view.