deeper - 10:46 am on Nov 7, 2012 (gmt 0)
It is not only one site, there are several to relaunch. At the moment they all have not more than 50 pages. But two or three of them should grow slowly but steadily - that's one of the reasons for a CMS now.
Maybe an onsite blog will be added.
So there are two ways:
Using the plugin, retaining the pages with .html and new additional pages won't get the .html. Then I had two different url-types for pages on one site, what is not so nice in my eyes, but get rid of the .html partly.
Or using your code and all pages, including future new ones, will have .html. One url type consistently, but growing number of .html-urls.