I agree NROTCdad. 1st boards meet in Oct. I don't think even ED is that early. There is only a limited pot of money, and the more boards you miss the less $$$ will be in that pot.
I would add onto kinnems advice. Not only make sure you have thought about chances of getting an admittance letter, but also think about the cost for each university.
IF attending that school means you can only afford it with an AROTC scholarship than think long and hard about the what IF scenarios. This board is littered every yr with posters saying I love my school, but have decided the military is not my desire. They will get the freebie 1st yr in case they make this decision....iows, no payback. However, what if they can't afford to stay without that scholarship, what do they do next? Go big time in debt for the final 3 yrs? Do they need to transfer as a rising sophomore to a school they can afford, but really don't want to attend?