So to my mind your question addresses two fundamental things:
- Creating your set
- Positioning your camera in that set.
For the first, I think you understand the difference in between an ext and int shot, and how they are typically lit differently. So rather than think of as one setup where you can do everything, think about how you are rendering the shots within the scene. You might need two scenes. So maybe you have a mesh/model of the exterior, lit with a sunset type setup (using the Sun type lamp). You have another model that's the same basic model bit with a wall deleted as you said and the interior lit with some Hemi and Spot type setups.
For the second (the camera) remember the camera has all kind of settings such as tense distance (so it doesn't render stuff really far away), focal length, lens length, etc. You can change these settings for different shots (or Scenes in Blender). So for an interior shot you might use a more "fisheye" wide angle lens (a shorter lens length) to capture everything. This might give you more "room to work" on your interior shots.
Try the two scene setup and see if it works for you.