Update,
Again thanks for all of the thoughts, I used Dave's last plan as a base and talked with Tim at Mianne today. Here are the details in the forthcoming quote: 1) Tim is able to do a 24 inch wide lift gate so the center will be a 24 inch opening. Fortunately, my metabolism is such that I can deal with this (we think). I took the 6 inches out of the overall width which is now 120. 2) I went with the 45 degree clip on each of the right side corners. I agree with the comments on clipping corners but want to see how this impacts things overall. 3) Tim thought the 3 and 5 foot widths on Dave's plan were very feasible, even for the 40 inch height platform.
Mark, your comments motivated me to go with the shelf idea and the lift. Tim says he sells 10 to 1 shelves versus carts for transformers, etc.
Thanks again to all, I should have the proposal from Mianne in a few days.