I'd use PVA, a few coats. The wax will never come off. The wax I use says it must be removed mechanically (Honey Wax) I don't think the wax and grease remover would do it. I know for painting - wax must be removed with wax and grease remover, then sanded, then removed again because of contamination. As Invertmast mentioned. It may be possible to wax over the PVA? that would give a barrier?