I thought I'd give it a shot at removing the windows and allowing openings through the form. So far i've only had time to remove some of the external windows and most of the internal space. And so far it prints rather nicely. If you have ooze dialed in then this will print quite well. With time i'll open up all of the openings and see how it goes with printing. As it is i'd anticipate pretty well but time will tell I suppose. If you can angle your fill layers to 45 degrees then there will be less overhang troubles in the top of the main void spaces of the building. I'm sure i've seen this option but can't recall where off the top of my head. Regardless it prints well enough and is tricky to fault given its size.