I need advice with a theme

[Paul2116]

Hi everyone, I'm new to coppermine and I need your advice on a suitable theme for my gallery.

I have roughly 2,500 pictures in 30 albums across 10 categories and I need to present them in a way that makes navigation easy. I looked at the themes in https://coppermine-gallery.net/demo/cpg15x but didn't see anything suitable. I'm thinking of a tree structure where the categories are the branches and the albums are the leaves but I am open to other suggestions.

Can anyone recommend a suitable theme? FYI, I'm using Coppermine 1.6.08 and the gallery is at www.paulandrosa.com/gallery.