How small can a 6'4'' 230 lbs piloted plane be ?

Here are two that are greatly more minuscule than BB II or any other. Stitts Baby Bird BTW is officially the smallest aeroplane...and BB II the smallest biplane. So I have ( A4 Aviation Worx ) to offer you the world biggest spanning almost free flying passenger plane and the world smallest AC. How about it ? There is update on North Star ( 65 seater ) and update on my unlimited racer too ( T-tail with flying elevator ). Smallest ever Merlin powered racer ( tanks in the wings ).