Adding one thing - Your plan is solid; one tweak that helps long-term is keeping folders flat by year (YYYY) and letting metadata do the organizing so you never have to reshuffle deep trees. In metadata, use the standard IPTC fields (DateCreated, PersonsShown, City/State/Country, Caption); for fuzzy dates set a midpoint and add a keyword like Date|Circa or Date|Range|1978-06–08 to keep searches consistent. Add a short README in the top folder explaining your naming and tags, and during your 3-2-1 backups do a quarterly checksum verify plus a small test restore; encrypt the offsite drive. For sharing and export sRGB JPEGs with captions embedded and keep your master TIFF/PNG plus sidecars untouched in the library.
