Not sure about the 747's, but there were the L1011s now in-service and the Laker DC-10s which, I think, were already plumbed for AAR stores. IIRC another option was from the DoD who would have let us jump the production line for some KC10s before they got their 60. Not sure what the costs for all the options were but I'd bet we paid more and got less. Why? So that the money went to places where it could be used for political benefit rather than operational benefit. Some things don't change then.
