Here is my plan to do so
As i see the outside i would disable the interior in model cfg, and setup view point so that i see the nose of the aircraft ( 172 classic) or the windshield (airliner) this i would do to hold on to the raindrops on the windshield.
But i would mess with the xyz initials to create distance between the two setups
For wideview it would slew you to the outside world, depending on which one would be secondary pc
On the master you will have correct readings according to your instrumentviews so this will be your
Plane and you can set graphics a lot less like eliminate buildings and trees and tlod olod etc for it will not be seeing outside world.
The world outside does not matter so much as long as it give accurate view and you should be able to get with a 3090 or 4070 but run it as high as possible.
I think it will be perfect to have a dome in a dome