Unless you have serious savings, you likely can not go to any 4 year school without your parents help or a big merit scholarship. I believe emancipation is a lot more complicated than just being independent for FA (possibly losing parents insurance?), if it was that easy a lot more people would do it. Are you the oldest in your family? They might not understand what colleges cost and how little loans are available for undergraduates without a cosigner. If they understand and still refuse to help, with ivy league caliber grades and athletic ability you should be looking at very large merit scholarships or full rides from very good schools. If I were you, I’d focus on this option. A higher ranking is not worth emancipating yourself.
Also, if you’re too young for serious offer talks, you’re very early in the process. Have your parents run net price calculators. My suspicion is that your parents will not be looking to put you into a 250k worth of debt just for undergrad. If they want you in these schools as badly as you want to be in them, they’ll probably end up helping you out unless there are other reasons besides wanting you to struggle. If they want you to look for merit, theres nothing wrong with that and really nothing you can do about it.