This is very encouraging for me.
I need to remove and repair/replace the sunroof in my 93. Hopefully this weekend I can get a good replaecment. I knew it was going to be a bear but was hoping for "possible" at least. I have considered taking it to an upholstery shop and letting them remove/reinstall but I am skeptical that they would be willing to do that (and replace it if there is damage).
Regarding adding a cargo light - go for it. You don't need to do much to get access there, it isn't like the whole headliner needs to come out. It was a very simple project.