That is a very good problem to have.
First thing I'd suggest is investigating a second regional. This will run 4,000 dollars just for registration, if you can do that contact
frcteams@usfirst.org.
Second thing, which will help you in the long run, experiment. Save up the money for the off season and try something new. Maybe a nearby team has a drivetrain you want to try. Use the money to build, break and improve it. Maybe next year you can be the ones with the cool new technology.