Before you attempt this do yourself a big favor. Build a mockup of the equipment first and practice the move completely ahead of time. This will help you find the tight spots and help plan the job.

 Better to have a crew moving forward with the job than waiting for a doorway to be chopped out or at worst case, getting stuck halfway down a staircase and having to reverse course.

My mockup was built from 2X2 material and screwed together. It weighed in at 40 pounds and with it I was able to plan the entire move. Much easier moving a 40 pound mockup than a 750 pound cabinet. 

 

I hired a company that moves gun safes into homes. On moving day 5 guys riding Harleys showed up. I went through a practice run with the mockup and showed them how the move would be done. Now into the house we go.