Should I take the Dec Sat II?

<p>I took Chemistry and Math II test in November. I got 760 in Math and 740 in Chemistry. I am debating several options:
1. Retake Chemistry and take biology
2. Take only biology
3. Not take the test at all and prepare my ACT</p>

<p>If I take biology and chemistry, that leaves me little more than a week to prepare. But I already took AP Biology, so it should not be extremely difficult for me. Or I can retake chemistry and math II, but I doubt I can improve much. I am applying for MIT, Stanford, and other Ive Leagues, are the scores high enough for these schools? And another option is to not take the test at all and prepare my ACT, but I don't really want to waste money.</p>