blogcfc and isapi rewrite

I've been thinking about doing this for the longest time, but I finally got around to add some non-blog content to my site... I added a basic bio (copy/paste from linked-in), my agenda with this year's presentations (will add links and downloads soon), and a flex app with community jobs.

I like the idea of managing my content from the back-end, so I'm using the page editor from blogCFC, slightly modified to use the fckeditor instead of a plain textarea.

I also didn't like the page.cfm SES ... while it's better than straight up dynamic urls, I'd like them to be cleaner, so I'm using isapi rewrite. I would love to use it for all my links, but after a year of blogging over 500 pages indexed at google I'm not sure it's a good idea... thoughts? should I rewrite my urls and leave both working for a while? this will affect the age of my content ... any expert out there?