In NH as well, got all 3 nominations to USNA, and an appointment came not too long after, in late December (no LOA, so I'm surprised). Best of luck to everybody waiting!
+1 to the advice on looking into Boys/Girls State, even if you get into NASS (if you're lucky they won't take place during the same week)... Boys/Girls State adds to your Whole Candidate Score, therefore helping your application to the Academy, and it's a great experience, as well as NASS