The existence of a mod that refurnishes Severin Manor makes me wonder if a Heartfires-style alternative might make sense.
You'd move into an empty shell, with just a workbench in the forge area, and build the content you want, probably with a Redoran style in place of the Nordic pieces. There could be alternatives for the second bedroom, with some master item locking out the opposite choice. E.g. you make a bed for it, it's a bedroom, you make a mannequin, it's a display room, and the rest of the items for that room then show in the build menu.
(It's also got me wondering about a Skaal BYO, but those homes are a bit small.)
The problem might be the need to add gatherable resources on Solstheim, but I'm wondering if I can substitute new recipes, like using bone for the Bosmer one?