How many crew does a P-8 operate with?
This diagram clearly shows it would be almost impossible to fit nine crew plus an additional twenty-six people in the aircraft. There are no seats for the additional twenty-six. At most you can fit two additional people in the observer seats behind the power distribution packs. The additional seats in the middle are for crew only during takeoff and landing. The aft cabin only has one seat for the mission planning workstation, and that's one of the nine crew seats.