hi, welcome back :-)
I'd forget about mesh and just fit a bunch of access points?
what kind of distance between the buildings etc. ?
what kind of starlink speed are they getting?
I've fitted a few of these at work
https://www.ebay.co.uk/itm/234892635332 and a bunch of the older ones (same thing, bit slower)
power over ethernet so no worrying about power where I need it
I like them, piece of cake to setup, good coverage, decent speed etc. etc.
but means you'll need wires between buildings