Apart from the minor rot at the bottom, the whole assembly is in rather good condition. I have a lot of spare time and scrap bits lying around, but not much in the way of money. As long as the outside looks nice after I get it painted, it doesn't need to be pretty on the inside. I guess my biggest concern is not having it rust out again too soon after getting it done.
I'll try working on it some more, and post some more pictures.