Advice Needed - AC

Added to this thread last winter as it was my first Vermont winter and it truly life changing advice and I’m so grateful!
I’m coming in need of advice again… I grew up with central AC and so the no-AC is really throwing me off. We have a window unit but a two story house, and my question is is how many do people normally have, one per level? How often do people run it? All night? All day? Wont the electric be crazy if we keep it on all the time or is it not as much as I am assuming?

Struggling going from sleeping in 59 degrees all winter to now being so hot at night. I never knew how easy it was to live everywhere else… lived in Alaska, the west coast, Midwest, & now here and boy has it been the biggest adjustment! They call East Coasters strong for a reason lol!