This is really amazing, epic in scale and design. I love the visuals you come up with, and your design aesthetic. Since you have it labeled as the world's most expensive house, any idea what it might run to construct?
Your sketches are stunning, and you've really inspired me to learn a little basic architecture so I can try some humble imitations of your floorplan + building sketches. I love the mountains in the back, and the fountain in front there ^-^
If I had to do this job. I would have the roof build in sections on the ground. Preferably made of one piece formed metal sheets so that the roof would not leak. The harness issue as long as you know what your doing and have the harness connected correctly your safer then standing on the ground.