Now both staircases have been finished and installed. These staircases are a little bit strange and really lack a lot of the detail that most die cut staircases usually have. The risers are very tall for one and the sides are quite plain. So, if you want to swap them out for pre-assembled staircases, then I don't see any reason why you wouldn't be able to. Just make sure you do careful measurements before you buy expensive staircases. Die cut dollhouses have special custom measurements and this can make it difficult to buy pre-assembled components which are made exclusively to work well with 3/8" cabinet grade dollhouse models. You will need to do some tweaking with the openings, etc, if you decide to go that route.
Now that the staircases are in, I went ahead and began working on the wood flooring. You can see how the shelf paper on the staircases blends in very well with the flooring. I painted the floors brown before I began applying the vinyl flooring planks.
Things you have to make note of. The first floor has an edge that extends out from where the floor actually begins. This edge is where the front panels will rest when closed so you can not apply flooring to it. Anything that causes this edge to be thick will not allow the front panels to close properly. You can only paint the edge to match your flooring or use shelf paper if your flooring is like mines. I plan on using the shelf paper later on. It will at least make the edge match the rest of the flooring better than paint.
When you're working with wood look vinyl flooring, you have to remember to stagger your joints. Do not apply the flooring in one whole slab onto your dollhouse floors. Like with the tile, it's going to make it look like you applied a piece of real life wood vinyl on your dollhouse. You want it to look like miniature flooring. This flooring is very forgiving and easy to work with but you will notice that some planks might be a little narrower than the rest of them. Usually these planks are located at both ends of the sheet they come on. Do not discard them. They work very well when you reach the end of the room where you might need a narrower plank for the best fit.