Think https://www.dokuwiki.org is good too, and not so bloated. But MediaWiki is good and most people know it.
I definitive think a Wiki would be good. There is no need for millions of articles, but some static articles (that could be extended) are useful.
You could quickly open a FAQ list. And insert articles like Radus detailed and good explanation on Calc Dose from CPM.
Also you could link to the wiki from questions in the forum. It’s for static information and the blog and forums link to it.