I hope you don't mind if I interrupt briefly... Shawn is correct that you should try to get a commitment for a CVW so that you will have at least a glimpse of what NAVY is like on a day to day basis for a plebe. Do not let the NASS situation throw you and just do your best to focus on getting your candidate's file completed - you can help yourself by contacting your junior year math and grammar teachers regarding their being available to submit letters of recommendation for you. Also discuss your pursuit of a SA appointment with your college placement counselor as he/she will be an important cog in the wheel of getting transcripts, etc, submitted timely for you. Work on starting the SAT/ACT exams asap! Take both series at least once as they are a little different and one series may favor you more than the other... as others will tell you, the SA's do super score for you, so you will get the advantage of your best scores from either series. Candidly you need to get the best scores you can and don't be distracted because someone got in with scores in the 600's (SAT) or mid 20's (ACT). NAVY will focus on your scores for math and verbal; it is to your advantage to have your math score in the 700's (SAT) or 30's (ACT). Your verbal scores should be in the same range, but they are not as critical as your math scores. Plan on taking the exams more than once unless you ace them the first time through. NAVY is going to place a lot of emphasis on your standard exam scores and on your class rank; it appears that there is so much manipulation of GPA scores that they have downgraded the significance of that score - the better it is the better it will be for you, but don't get obsessed with it.
Also, work on your physical fitness throughout the year. Get your candidate information in as early as you can; it can make a difference. Best wishes to you, and again, I apologize for interrupting.