My paint is still holding up pretty good so far. Fuel only got onto several small areas on the belly pan. If the paint starts to peel, then I might clear coat the entire underside with LustreKote flat clear.

I recently put the plane on a postal scale. The fuse weighs 7 lbs 10.2 oz and the wing weighs 4 lbs 2.4 oz. So the total weight is 11 lbs 12.6 oz, or around 11.79 lbs, which is not bad. I probably got about half a pound of fiberglass reinforcement in the cowl and the wing saddle areas.