I'm deciding to take 3 math classes (4b, 6a, pstat 8) next quarter and I'm not sure if it's something I should actually do. I'm 2nd year pre stats and data science major, and if I want to declare my major, I'm going to have to take all these classes so that I can declare next quarter.

My first question is, "Is it doable?". Of course it probably is if I work really hard, but what are people's experiences with taking them. Am I going to have no social life, if I do take all of these at the same time?

Second question is "Does it matter?" What if I only take 2 of them, and not be able to declare for my major next quarter? Will that affect me in any way? I'd assume no, but that'd hold me back another quarter from taking upper div classes. Honestly I just feel a little behind compared to other people because I see a lot of them taking upper div classes already, and I'm still here trying complete my pre-reqs/