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I say no to that, if the glue line turns out good. You should only think about doing this if it doesn't. And I'd say go for a rosewood strip if it turns out to be necessary, to tie it in with the fretboard. I think too many unrelated species of wood here and there will make it look too messy.
About a billion layers of clear coat sprayed on with a painters gun.
So not a French polish?