With CMSimple 5 you can use 6 menulevels by default:
Headings h1 with the CSS classes "_level1_page_ "... "_level6_page_" will dynamically split the document into new pages:
<h1 class="_level1_page_">Menu Levels and Headings</h1>
CMSimple includes a pagemanager that simplifies creating, renaming, moving and deleting of pages. Even complete folders with subfolders can be moved or deleted with Pagemanager.
Thus it should be no problem to get rid of the contents of this standard download. Alternatively you could start with the present page structure, rename pages and overwrite the contents.