OOS UNC-Chapel Hill

Yes, apply EA.

Yes, think about applying to other colleges – and not just “prestigious” ones. First, even though you seem at first glance to be competitive for admission based on the information that you have provided, nothing is guaranteed in college admissions; so you need fall-back alternatives. Second, you need to seek a school that is right for you, and not be concerned about whether other people think the school you attend is “prestigious” (or even whether you think it is “prestigious”). Fit is a more important consideration than “prestige”; and as Frank Bruni has put it so well, it’s not where you start but where you end up that matters: https://www.nytimes.com/2015/03/15/opinion/sunday/frank-bruni-how-to-survive-the-college-admissions-madness.html?rref=collection%2Fcolumn%2Ffrank-bruni&_r=1