That's really great work. Yes it costs a lot but at least you got a deal on the windlass. I see you used aluminum to make the riser that gets the furler up out of the way. If you want one in stainless I have plenty of scrap material, I can plasma cut an identical piece for you and drill the same holes. Since its SS it will won't be as thick as that chunk of aluminum and your bolts will fit better, it will be stronger, and you won't have to worry about bi-metal corrosion. Plus, I have polishing wheels so i'll make into a mirror finish!
Just send me a PM with the dimensions or a drawing. I have the same CD stem fitting so I can be sure the bolt holes line up, I can mail it in a regular USPS padded envelope, won't be too heavy.