I'd be taking intro physics that are as basic as my given establishment offers; the only prereq is precalculus (which, along with calc I, I did fairly well in). And after thinking about it, I'll probably take them senior year, just to allow for more DAT preparation.
With the biology, I can't change my fall classes for various reasons, but I do have flexibility with winter and later on. However, the first of the three part series isn't available in winter, only fall and spring; the second can be taken in fall and winter, and the third in winter and spring. There are no prereqs for any part of the series. Should I just start with the second part in the winter, then the third in the spring, and end with the first the following fall? Or should I go with the first part in the spring, the second the following fall, and the third afterward? Or....should I just wait and take them in right order in one year? That's my main issue, deciding if biology is something that can be spread out a little, say, over a summer.