x 2!! I'll ask our painter. I would thing you would need to sand it down, then use a fine grit to smooth. Then, start applying the stain, allow to dry. Then apply the coats of sealer/varnish. Will the door get direct sun when it's where you are going to put it? Have you considered painting it?
Oh yes! Sanding, painting. Either a muted red or blue for the base color. Then antique write over top and then distressed and sealed. I'm going for a patriotic shabby chic.