Perhaps one of the problems with the time and expense to complete the aircraft is that they were already built before being modified. While Trump may have had good intentions, it probably would have been cheaper and faster to “start from scratch”, than to heavily modify an existing airframe. One thing that does rankle me with using a giant plane like this is that they wind up hauling the press corps around with them on every trip. That requires extra seating capacity, plus having to carry the groceries to feed them all. If the press wants to cover whatever event is going on, let them make their own travel arrangements at their expense!