The WMRI (West Michigan Robotics Invitational) allows pre-rookie teams to compete and I am sure that there would be no problem with having your team 'divided' and use two robots, get more kids involved that way!
Team 904 Creston was gracious enough to lend us their practice robot to compete with and we ended up doing really well!
Thanks 904!
http://www.wmri.net
The website is not updated yet but I am sure it will be shortly.
Also, forgot to mention WMRI was a BLAST!!!! Very well run and a great time for all who attended
Corey