Glass windshields are expensive to replace on Lucid Airs. The roof window is not cheap either. My experience is Lucid should be the installer. They will warranty the repairs should something be installed improperly or damage occurs during install.
I cannot speak to metal roof. But I’d still have them do it if you can. There were inserts that were corroded out that needed to be replaced so I’d talk to Lucid about installing them.