FLL is a great way to get kids involved with FIRST, most of our team has come from an FLL background as did I. Our team originated from the FLL team Mindstorms Mayhem and had a second team More Mayhem. Many of our members mentor FLL and volunteer at the New Hampshire State Competition.
We incorporated FLL into our Chairmans submission in our video-
http://www.mechanicalmayhem.org/teamvideos.asp as well as in booklets we made for the judges to read through.
Hope that all goes well for you guys!