Frame by front door hinge is a clear, easy-to-access location that is not suggested by the FSM.
It's where the scissor jack goes so it's not like they're saying 'don't push here'. My guess is they want the stands at the far ends for stability. At the frame horns, however, would be right in the way of trying to slide under from the front. No-go in my book. I have, however, used that spot as a redundant support if not approaching from the front. No reason to have extra stands sitting on the shelf. They can only save your life if they're under the truck.
