What if I retake SAT I and get lower?

<p>I got back the January SAT results and I got the same score as my first SAT. 2210.
I improved from 740 to 770 in CR, 670 to 680 in Math, but dropped from 800 to 760 in Writing.
I'm debating whether I should retake the SAT again since I already took it twice and I don't want to overdo it. I want a SAT score that has the potential for Ivy League, like Columbia.
Also, what if I do take the SAT a third time and get lower? Will this lower my chances for acceptance or make me look bad?</p>

<p>Note: I do plan on taking the ACT and an SAT II Math</p>