I’m kind of surprised your school allowed/encouraged so many apps. For elite private schools, a huge part of your chance is the counselor rec. They’re landing 8-20 kids/year at Harvard, they know what their Harvard performance is like. Question is whether counselor thinks you’re 1 or 40.
With ROTC, I’m pretty certain you’ll be admitted based on visible info. They want to fill those slots. Have you contacted the unit CO? As this isn’t a conventional ROTC scholarship you might not be on his radar to advocate for.