Wow!
Looks like it will be amazing...put in a runway and it could double as a control tower!
I’m curious to read more about your quad pier design...
Also, perhaps think some more about staircase v ladder - Lugging expensive/heavy equipment up a ladder sounds challenging. I guess you won’t have to do it very often, but there’s always a bit of changing, trouble-shooting and upgrading that goes on, particularly during establishment.
Given the skill you put into your adapters, I’m sure I’ll enjoy watching your obs build.