I would like to finish my Eros with Tung oil, but I also want the toughness of polyutherane. So I'm thinking of putting 1 coat of Tung oil and then a few coats of polyutherane on top. Is there anything wrong with doing this? The cabinet exterior is of 1/8 pre-veneer mdf which I got from Lowes. It's call Lauan door skin.