Electric And AC Sizing For New Building Housing PDP-8s and PDP-11s

Hi, I've just built a new building that will be part machine shop and part vintage computer display area (and workshop for repair, etc.) I'm trying to size power requirements and AC requirements. I know that without specifics as to exactly what I'll be running (and all the options) then it's really hard to come up with anything. At the same time I need to decide and get the building wired up and the cooling set up. I have a number of different racks of PDP-8 and PDP-11 equipment along with other more personal sized computers. Obviously not all will be powered up at once, but I'd like to spec out requirements so that I can at least run a few at a time. Likewise with the AC. I'd like enough AC to be able to run for as long as I want without overheating the equipment or myself (and I overheat easily.) I know some people have been setting up shops recently and I guess I'm wondering what they've been doing for both electrical and AC. Any input is greatly appreciated. Thanks, Todd