RE: 90 sized 3D kit?
I built a Midwest Lil Cap 232 about 5 years ago, lightened it extensively. The fuselage is way overbuilt so I made some modifications there and swapped out some lighter wood in the wing. Weighed 6 lbs 14 oz. Initially powered w/ Saito 91, then YS 91. It flew better w/ the Saito so that was in it the when it was sold (could only fit 3 planes into my truck when I moved from California, sorry to see it go). It has the control surface size to perform 3D well, and it is a decent size, but not too big. Attached is a pic. The canopy was painted due to that area being gutted.