I have finally got my selfhost wiki up to a satisfying shape. Its here: https://wiki.gardiol.org
Take a look i hope it can help somebody.
I am open to any suggestions about it.
Note: the most original part is the one about multi-homed routing and failbacks and advanced routing.
As already stated, it’s Dokuwiki. I tried a few and this was the best compromise between features and complexity for my needs.