The middle picture made me lick my chops!
All that building seems to need is a spray with some Chlorine and a LITTLE TSP with some Borax added.
We find the Borax aids in not spotting windows!
Actually, if you read a box of Borax, it is used in automatic dishwashers for sparkling glasses, LOL
I don't know I would even bothered with a lift ?
But I am not there, and respect your judgement.
I have done tall buildings before with a telescoping wand, and a good rinse rig.
Hit all surfaces with the mix, and let God sort em out, he he.
Congratulations on this big job David!