I have a similar corrugated building - insulated /indoor office with log burner and divided into various work and storage spaces. It can still get pretty cold in winter (Im in Scotland) but it been great. I don't need heavy lifting equipment so cant comment on what you will need. What I can add is do make sure you reseat the roof panels (the old nails were workimg loose on mine); Painting it is a PITA I do it every 3/4 years and do check the bottom of your vertical wood pillers, I suspect some will need to replaced.
I'm actually starting to plan the next stage of my Big Green Shed with a 'leisure' end to open out at one end into the garden - the ultimate Meccano set :-)
I'm actually starting to plan the next stage of my Big Green Shed with a 'leisure' end to open out at one end into the garden - the ultimate Meccano set :-)