After quite a while I finally decided to work on this again.
The manual approach seemed laborious so I decided to try a few gallery plugins and see what can work best for this site.
Envira was not really so good, even though research deemed it one of the best free options. Modula is the winner for tonight. After some tweaking and custom CSS declarations, I was able to get a simple gallery to work and look how I almost wanted it.
I took screenshots of the next SOHEI set but I did not upload them yet. After a day or two of perhaps a little more tweaking with Modula then maybe I will embark that is the arduous task of getting everything on here.
I should look into an SEO plugin as well as buy a domain for this site; I don’t want to have to redo all the permalinks – that would be a nightmare.