Stop trying to game the system and read the Early Decision contracts for the schools. It's too late for admission this cycle, but most of the ED forms I know of say that you can only make one binding admissions application and by submitting the form, you're agreeing to that. It always blows my mind that people would want to start out their legal career by trying to be manipulative. Just do what the application says. It's not that hard, nor is it unreasonable.