“Should I take a class in Non-profit Management this fall? I already have a full time & part tim asdfadsf ”

Should I take a class in Non-profit Management this fall? I already have a full time & part time jobs and volunteer a few nights a week, but I'm really interested in the subject & the teacher's supposed to be good, but I'm worried I'll have too much on my plate & get stressed out (something I hate). Shall I take the class?