We did this last year. Went hybrid AD-join first, then enabled OneDrive Known Folder Move for Desktop/Documents/Pictures only Downloads and files stay local. Profiles aren't fully cloud, but close enough. Keep Adobe/Unity projects out of synced folders; sync choked on huge files and lock files. For moving NAS data into SharePoint, GS RichCopy 360 saved us: preserved NTFS permissions and timestamps, handled long paths, and scheduled incremental runs overnight so cutover was painless. Pilot small, as you're planning.