The thing I PM'ed Bruce N H about is essentially what you two have said (Dunechaser and architect).
WordPress would give you the RSS functionality you need, plus with WP 2.7 there is plenty of functionality to make it work as the kind of CMS you need. Also, it wouldn't be that difficult to use WordPress to make the site look less bloggy. In fact, I could make it look pretty much exactly like it does now (or a little better).
I know I'm relatively new here on Classic Castle, so I'm not sure if you'd like to let me do it, but I'd be glad to donate some time to the effort. To see some of my work check out duckingham.com and wishorchard.com.
If you're interested I'd create a mockup WordPress installation on a "hidden" folder on one of my other sites, to give you guys a chance to look at the work before we got to the point of migrating it over.
It would be a pretty straightforward thing to set up the database, import content, etc., and then when you're ready for the migration we'd just need to coordinate a little bit.
Of course, if someone else is available and has the time and is already better known at CC, by all means -- I won't be the least bit offended.
But, if not, I'll be glad to start mocking it up for you. Just give the word.