[stomachmonkey]

The problems here as I see it and what my suggestions for a tool like Redmine address are the pages themselves.

Unless I am not understanding this

a) the number of users may increase over time.
b) the content of the pages will change.

So for each new user a new DB entry needs to be created and and appropriate page privileges granted. That is recurring work for someone, my guess it'll end up being rattlesnak.

The pages of unique content will need to be maintained. Who is going to do that? What happens when new pages are added or pages are deleted?

I don't think you are looking at the complete scope of the project.

This is a groupware system. The volume of users and data may be small but that is irrelevant.

The business process is what is important here.

There are plenty of open source turnkey solutions.