We are painting our bedroom walls and ceiling; in the process we decided to paint our old stained doors. Prior owners did a bad job staining and finishing them, paint is probably our only way out. I have been advised to use only oil primer and final coat paint on these. other doors in the house probably have latex on them, but that was applied over various coats. These would be the first paint coat--probably have to scuff up the doors a bit before priming. Is oll paint the way to go? Thanks.