Practice with Khan academy right now, see how you do. Your confidence you’re among the 1-2% top scorers in the US tells me you haven’t really started working on it. Spend 1 hour on it every day during your Break.
The issue with Nutrition is that it’s not offered everywhere, thus limiting your choices. If you can add Psych (as a possibility where nutrition is not offered) you keep more options.
Your curriculum rigor doesn’t add up - I dont see the coherence in your choices, the progression. Its nor just about numbers, although that matters - your choices need to make sense and “tell us” you have a sense of what you want if you deviate from expectations. Your choices seem a bit all over the place - strong rigor and odd choices.
You would optimally have English and history/social science all 4 years, Math through precalculus or calculus, Foreign Language through Level 3 or 4, Bio/chem/physics + 1 AP, electives.
UMD CP has become extremely competitive so your odds will depend on where you attend school- if Montgometry, it6s a reach, but Towson is likely.
Have you calculated your EFC (the minimum amount your parents will be expected to pay)? Can your parents afford their EFC? (Most cannot 
) Have you discussed college costs with them?
I’ll try to build a model curriculum for the upcoming semesters so you have an idea of how to get back on track since you’re close. It sounds like you’re on block scheduling with 4 classes per block and optional summer session, is that right?
Are you a Heritage speaker (parents and/or grandparents speak Spanish at home)?
If so, does the college you’d dual enroll at offer Spanish for Heritage Speakers?