Yeah, 2000 miles would be one expensive move.
What you want to do is certainly possible, but two people and a workshop in a 40 foot bus is going to get massively cramped, especially for full time living. Our shortie has good living space in 16' of bus but we'd both go nuts living in it year round.
Just brainstorming here:
I saw where one guy had bought up a bunch of buses and buried them making a small underground "city" for use when civilization goes south.
You could get two buses and park them side by side for a double-wide setup.
If the bus/s will be permanently parked why not dig trenches for the wheels and run the bus into the trenches placing the frame on, or near the ground for easier access.
Build a shed (or drop a container) on the windward side for your shop. You could extend the shed roof over the bus to keep the sun and snow off the metal bus roof.