My adviser has suggested this lineup for me for the fall semester this year. I have not had any problems understanding calculus so far, and I am very excited about physics and statics, but the idea of this kind of workload is new to me and is quite daunting. Is this doable? Or would you advise against it? I am no kind of genius, but I'm not struggling either. I do work, and with my job I can realistically devote up to 20 hours/ week to studying, and perhaps a bit more prior to exams.