I am currently working on transferring this Website to Tiddlywiki. So long as I keep all the images external, it appears to work nicely. I will be hosting the Tiddlywiki on Tiddlyhost, and pointing that at my domain.
The organisation will be more rational, the content more comprehensive and informative, and (most importantly for me) it will all be more easily maintained.
Everything else is a secret for as long as I’m building the site.