Once the SAR has been processed (about 3-4 days, I think) you can edit the existing FAFSA. You'll have to remove some of the schools and then add new ones in their place. It sounds kinda risky, but it's the way recommended by the FAFSA site. (Leave it to the Federal govt. to create a limit so infuriatingly arbitrary and easy to remove). From what I've read, as long as the FAFSA info. is saved for a given school at some point, that school will be able to access your information.
There are several links out there on the Web that will explain this better, but I'm too tired (and lazy) to look them up for you.