Dear Track Girl. Your excellence is being recognized with a golden opportunity! The pros are as everyone listed above--but also you will be in beautiful Rhode Island for the year surrounded by young men and women as motivated as you are to learn to lead and to serve our Nation. Maybe the greatest benefit is that you will arrive at Annapolis in the summer of 2018--along with your best shipmates and you will know how to do everything. The con? You will spend five years to earn a BS--but you know what, our lives are long--and perspective-wise at 18, that might seem like forever but it is nothing, you will be so busy and have such great adventures...and many people having lesser experiences spend five years working on their bachelors degree. You will be wiser and better informed as you move through your academic and military program at USNA--and be better placed to make the service selection and get the type of specialty that you want. Be blessed and be happy! Congratulations.
(Also, I am glad you followed up on the vaccination issue.)