"Check the dozens of timelines." - Why don't you check the eye-witness reports and data on the in-flight recorders - additionally air traffic control tapes (radar and voice).
"The staged event went off so successfully, the govt didn't need yet another success. So the plane was brought down."
The flight that crashed in Pennsylvania was delayed at take-off, due to runway congestion at Newark, by 40 minutes. The hijackers could not have predicted that, or taken account of it, the people you claim were responsible could have cleared that problem instantly.
The target for this flight has never been definitely established, but information from Al-Qaeda members currently in custody (One of them was the guy responsible for hatching up this scheme) identify The White House and Capitol Hill. Now as you are so keen on timelines, if the Newark flight had taken off on time it would have hit either of those targets at around the same time that the other hit the Pentagon.
The plane was brought down due to the action taken onboard by the passengers - it was intact when it made contact with the ground.
"....all 4 planes were at EXACTLY 20% capacity." - No they weren't
Depending on exact type and seating arrangement the two Boeing 767's that hit the WTC were at 33%; 26% or 22% for the aircraft that hit the North Tower and at 23%, 18% or 15% for the aircraft that hit the South Tower.
For the Boeing 757's that hit the Pentagon and crashed in Pennsylvania, depending on exact type and seating arrangement these aircraft were at 29%; 25%; 24% or 21% capacity for the aircraft that hit the Pentagon. Capacity of the aircraft that crashed in Pennsylvania was 18%; 16%; 15% or 13%
Hopefully a drug store near your location will be opening soon and you will be able to resume your course of medication.