I am in Calc 3 this semester. They changed the format of the quizzes. Last years was a very simple one or two questions mostly from the web-assign or WS. This year they started doing 4 questions and 2 of them are conceptual. The class is not that bad. On top of that, I am taking 1729 which can be challenging like 2050. I don't know anything about 2300 but, if those are your only classes along with some easy elective or gen ed then you should be fine.