That's basically it.

If you make the interior of the house as a new map, say 50 x 50, or even smaller, and put a teleport to it in the door of the exterior on the village map, then you'e got it all working.

If you go into the properties of each map, then you should be able to set a chipset to each map - that is, the different elements you can use. So if you don't like the default chipset, you can easily find an interior using a Google search and use that instead.