You have good ECs and have done well in honors classes. 8th grade grades mean nothing, I don’t know why those grades are on your transcript but when a college sees all As in HS years they shouldn’t hold that against you at all. You have a good shot but just note Columbia can be tough to get into so have a backup plan just in case. I’d do ED (early decision) if it’s truly your top choice to maximize your odds, but you probably need some research of other places your applying before making that decision. Good luck and don’t let anyone’s bs lack of character comments get to you (–as if the college process wasn’t stressful enough without the addition of random insults thrown into the mix)!