Should I do ED or wait?

So my dream school is UNC Chapel Hill and I live instate. I just recently took the SAT and am waiting for my score, it was my first time (I know I was really late) and it was the last SAT before early decision deadlines. I just know that I didn’t get the score I wanted
I know that early decision tends to have a higher acceptance rate so I am struggling on whether I should apply with whatever mediocre score I have or if I should wait to take it again and have a better application for regular decision. Any input helps. Also note that chapel hill UNC early decision is not binding.
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Replies to: Should I do ED or wait?
The big question is whether they reject applicants during EA.
My apologies for the erroneous information @sadiyanoor Good question.
The question was, "Does UNC defer to Regular Decision all the EA applicants who were not accepted early, or do they outright reject some EA applicants and remove those applicants from the RD pool?"
I've seen similar questions asked about other universities' EA/ED before and that is the gist of what is generally asked.
They do reject EA applicants outright in January, that's what I meant by what I wrote. My understanding is that they don't defer/waitlist a lot of students. More than half the EA applicants are rejected right away. They did away with deferrals last year, sent applicants directly to waitlist- what that means, is that those applicants will not be part of the RD pool, given a fresh look for the decisions that come out in March, like a deferral. The waitlisted applicants will have to wait until much later (late April, possibly May) to know. So, really, a waitlist is a soft "No". The past two-three years, they waitlisted 800-1000 applicants, accepted about 20 of them.