I have a '99 RT1000 in M/S, which I believe would be too small for your team (I am 5'6", stoker 5'3"). For easy visual identification, the Cannondale Medium/Small frame has a distinct "kink" in the captain's top tube, as seen here:

http://www.bikepedia.com/Images/Defa...=35313&if=2001 Cannondale RT 1000.jpg

Makes for a very low stand-over - especially important to my stoker.

The Bikepedia site is a pretty good resource for component specs, colors to establish model year (though my '99 by component spec has what Bikepedia lists as a '98 color; and mine came with 48-spoke wheels vs. 40 per spec)

Tom