I took AP chemistry, AP physics 1, AP physics 2, AP Psychology, AP Lang, and AP Government all simultaneously, and I can’t lie to you and tell you it wasn’t challenging. But I, in no way, felt like AP Psychology posed a detriment to my study time for the other classes. In fact, I don’t think I really studied at all for the actual test, the material is very easy to learn and very easy to quickly recall. But I can see why you’d be on edge about taking it. If I had to order the tests I’ve taken in increasing difficulty, it’d look something like this:
AP Psychology
AP Language and Composition
AP U.S History
AP Government
AP Chemistry
AP Physics 2
AP Physics 1