Zaiya sees what she can when we arrive, in case that changes plans.
'pult up the hooks and knotted ropes. Secure to Beetle.
Use climbing kit, U'lin Guidance Claire.
Claire climbs, ready to slide back down if she judges we need alternate plan.
If seems safe, she pulls up/helps Zaiya climb, with kit and Guidance, to start working on ward bypassing.
Then Moira, kit/guidance, in case they need manual defeating of locks, or her skill in breaking magical trap/connections. (also leaves U'lin alone, but best able to survive solo until party returns).
Then U'lin joins if room (kit/guidance).
Moira:
I'd personally prefer a safety net to negate fall damage on a proper save, rather than lowering the DC by 1 and risking taking a bunch of damage on a bad roll, myself.
How about a safety net set up beneath the aerie entry? Attach to opposite side houses, etc?
Surely nets and bolts would be accessible from the armoury?