Sorry for the delayed response, since I was jetting around Europe with no internet connection.

I'd be mindful of your first leg of the flight as well. Continental only operates ERJ-145s out of BNA, which might start the trip off on an unpleasant note.

You might consider flying NW via MSP (but not a West Coast gateway), as they've recently updated their World Business Class product on the A333 flight to make it right on par (or very close) to CO's.