Although I think that it is a personal decision, it can be done. I had A for AP2, and B for Micro. For me, I did both but I wanted to avoid any problems so: I did the classes on separate days, I only had 1 other class (non-science, not math) (I did sociology); the lab teacher and lecture professor was the same person; I did tutoring for the first 3 exams to make sure I was Ok with the chapters I still think that you can prepare and pass both classes.