hi,
there is a plugin which gives you the number of changes made by person, number of pages, and 2 other things (
http://wiki.splitbrain.org/plugin:stats) But i don't think there is a paga monitor. Maybe you better use some kind of visit counter?
I think you best use flat-files. Dokuwiki is meant for this usage and all the people around here can best help you when you use these. btw, a db is only better when you have more then (i thought is was) 20 000 pages. :-D But you best search the web for this number :-p (it seems a way too high number ;-) )