Sounds like you have it covered friend. I use two washcloths and tape them on the end of the ladder where it will come in contact with the wall to prevent scuffs. Set up is exactly like the exterior.
Definitely make sure that the ladder has non-stick feet or grab some non-slip material or a doormat with a non slip surface. Ensure to test it before going too high. Always best to have a spotter.

Exactly! It is not a Time Off Request. It is a Time Off NOTIFICATION.

I have used flat and semi gloss water based poly on several dressers over 5 years ago. They have help up very well, no yellowing. I primarily use water based stains and everything turns out great. There is a slightly different technique then with oil based. Like “popping” the grain with a spritz of water and a light sanding to get rid of the “fuzz”. I believe the WoodWisperer has some really good videos on using water based finishes if memory serves correctly.