Yes a power outlet at the apex near the edge of the mez floor, so you can set up a small 240v 200kg electric winch to lift the awkward pieces up. Especially if you are out there by yourself. Waiting for hernia surgery to heal is not fun. It took me three times to wake up.
My mez is in the trusses and is not the easiest to negotiate, yours look like it will be nice and open.
Don't forget to insulate the office, try putting a section of brick wall in as a heat bank. yeah I know it sounds green, but it works, you can still put plaster either side to hide it. we used metal wall studs etc and the common concrete bricks stacked dry snug in the frame.