I'm planning to seal the wood grain and paint[>:]. I have tested one sanding sealler with denatured alchohol as thinner(forgot the name now), in the hz and vertical stab, and it sealled the wood really good after 3 to 4+ coats.It seems to be some sort of natural resin like shelac and it's compatible with most of paints. Then prime and later paint. Fiberglass would mostly be heavier and I don't like the mess of working with it, although I have done some work customizing my cowls.
The Robart615 issues I found are mostly related to bended arms when landing. There are many treads about it here in RCU.

Regarding the color scheme, is there any website where I can find then, with details?

Thanks for the incentive words on the construction quality. It keep us persuing the perfection