<p>I'd send the ACT. I don't think those two SAT II scores below 700 will hurt you, especially since your base SAT (math + verbal) is 1490. From what I've seen, they look more heavily into the Verbal and Math sections and not so much the writing section for the SAT I. For the ACT, curiously enough, I've read that they do require you to take the ACT + Writing. But, seeing that you've taken the SAT along with the ACT, I don't think it'll be a big deal (worst comes to worst, they won't look at your ACT but still look at your SAT and see that you dominated the writing section).</p>