A few things that I would consider… Take a good look at the heating system, an insulated floor is a huge plus, you’ll definitely want one a generator hook up and if possible bring along a generator to do some quick testing, if you don’t have a generator you can bring a 12v battery to verify that lights, outlets, etc work (and maybe a set of jumper cables just in case you need to farmer a hook up), it might sound like a luxury but having a ceiling fan is a huge benefit for keeping air temps from stratifying and also keeping the holes open at night, also a luxury but lots of storage shelving is a huge plus, look at how good are a the tow hooks and jack plates, ideally you’ll also want towing hooks both on the front and back.
I’m sure there are plenty of other things I’m not thinking about as well. If you happen to be looking in the Malmo area and wanted to borrow a generator for electrical testing PM me and if my dad is at home you ccould stop over and borrow mine.
Will