Take Vector Analysis, it's everything good about Calculus III. Makes you think about the concepts rather than plug and chug and introduces you to tensors, which I think are super fun.
But yeah Calc III sucks. Be prepared for Stokes and Greens theorems, they will fucking kill you if you don't prepare for them.
But yeah Calc III sucks. Be prepared for Stokes and Greens theorems, they will fucking kill you if you don't prepare for them.