Hi DaveA,
I've just had a look at your
https://atkinson-swords.com/ website. My current site is
https://weaponscollector.com/.
I have a prototype Omeka S site, but I'm not ready to share it publicly yet. I'll try sending you a private message.
Omeka S seems like a much better platform to go forward with than Omeka Classic, but it requires a level of familiarity with the Dublin Core that few "muggles" have. I've yet to find an eager grad student to help, but I'm looking.
I hope to get back to developing the new website soon and will keep your requirements in mind.
Best regards,
Dana