As others have stated, make Boys State and studying the top priorities! They'll help you get into your dream academy no matter which you end up choosing. Over the summer, I attended Boys State, SLE, and NASS. Like you, I was leaning towards USNA before my summer experiences. However, I had the exact same impression as
@kpmom2013's DS after SLE. It was a great time and I met many like-minded aspiring candidates. NASS is extremely similar, and is also a very informative and fun experience, but accepts many more candidates than SLE, so it was less personal and not as good IMO. For a very long time after that summer, I had an identity crises on whether I wanted to become a Whoop or a Squid~ both insults sounded equally appealing! SLE had basically sold me on WP, but the Navy was the service and lifestyle I desired. Plus, gosh darn those Navy uniforms are spiffy. I was in a major dilemma, in no small part due to SLE and NASS!
Fast forward to the present day: I'm going to the Naval Academy.
The reason I provided my personal experiences is that it doesn't matter which summer camp you attend. It didn't matter that SLE was a fantastic experience, as somewhere in myself there was a connection I felt towards the Navy and I couldn't be happier in my decision. Both will do all they can to sell you on their academy. Neither are the full experience of the academies- think of them as trailers for movies- they can give you a general impression of what you might like. The trailer for Forrest Gump can give any viewer an idea of what they're going to see in the movie, but its impossible for them to relate the sensations and feelings the viewer might experience. In the course of Forrest Gump (AKA your 4-years at whichever academy) you're going to laugh, cry, and frown many times- sometimes all in the same scene! The trailer is nowhere near as powerful as the movie.
At the end of the day, you should stick to where you see yourself in the future, what you want to do, and who you want to become. If you are leaning towards the Naval Academy, then go to NASS! Attending both SLE and NASS is optimal, especially if you are not entirely decided on one, but that can also give you conflicting ideas of where you want to go. Going to WP for a week and being engrossed in that Army Strong mentality may have a similar effect on you. Go with your heart and don't think twice. It is a very exciting time for you and I wish you the best of luck!