How can you not believe any of what you wrote but also say that you believe the Saudis did it? The Bush-Saudi connection was known for a decade before September 11th.
Bush Sr. literally invaded Iraq to protect Saudi oil interests. No one at the top actually believed Saddam was an immediate threat to U.S. interests.
The only planes that flew out of the U.S. after the attacks were Saudi nationals who were granted exception by the White House to flee the country.