Actually, pressure would be less if it were taken in stages similar to how they do it in the Burj Khalifa.
However, your pressure calculations seem reasonable. It's certainly well within the capability of the the current technology. If they wanted to do it in a single shot it appears possible.
Hitchens' razor What can be asserted without evidence can be dismissed without evidence
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.