My recommendation: Do not ever apply to Early Action (Binding round) if you are unsure about the college or your financial/life situations.
There is a reason they explain the EA terms.. something like
Candidates who apply through the Early Action Round may apply to other MBA programs. However they agree not to apply to other binding admissions programs. If admitted to the Daytime MBA program, Early Action candidates agree that they will immediately withdraw their
applications at other schools and refrain from submitting new applications. Do not apply for early decision lightheartedly. It could come back to haunt your other college applications and the rest of your academic career. Schools share EA decision results and not abiding to policies may have legal consequences. Better play safe.
R1 is as good as EA in case you are unsure about the college.