<p>How are your section scores? Also, how are your current practice/expected scores for SAT and ACT? You know you need to get 35 in ACT to make it worth something. Unless you have 690 in Math or CR in SAT, I would suggest you to focus on AP and SAT2. Of course, if you have extra time and money, there is nothing to stop you from taking ACT. But make sure you at least try a couple practice test to see if it is worth to give it a try. If you get anything lower than 35, you are not gaining much except for waiving the SAT2 requirement for some schools.</p>