Consider ICF for the walls, steel joists which would allow you to have large open modern looking spaces - i.e. https://www.youtube.com/watch?v=MRGMcLPrrZU https

Consider ICF for the walls, steel joists which would allow you to have large open modern looking spaces - i.e. https://www.youtube.com/watch?v=MRGMcLPrrZU https://www.youtube.com/watch?v=MRGMcLPrrZU