Your need for a simple CMS sounds like the ETP (Edit This Page) facility that Luke wrote... can't find the thread to link to right now. If that ETP code works with OpenACS4 CR, then you should definitely give it a try.
Others (Luke, Talli) know much more about ETP than I do... I know it exists, and I played with it on a demo site that was pointed at here in the bboards recently, but that's about it.
Worst case, if you just need to control edits to your files, put them under CVS. Not pretty, but it works.
