Thanks heaps you guys. My plan is to work out an area that's Lower Story and half of the Upper Story that are Interior, though with hallways and walls dividing things nicely so I can stack lots of stuff in them. Then, the other half of the top floor and a "patio" of sorts will be outside. That will use similar ideas with walls and things obscuring the view. I really, really like those mods you linked too. That dude's got it down to a bloody science. This will be my first house mod, with an eye to porting it to the PS4 (once I can afford SE on PC) so I'm going in knowing I have to be a bit modest in my endeavours, but I'm shooting high anyway.