It's pretty much your LSAT. You obviously need pretty good grades, but the LSAT is really gonna make you or break you. That being said, I did OK on my LSAT, had good grades as an undergrad, and got in several places, but not everywhere. Don't worry too much-you'll be OK and get in somewhere if you really want to go. Any GPA over a 3 and an LSAT over a 155 will do it. Good luck!