Classes

So, I'm taking 9 hours this semester. I don't really have a steady job for Friday and Saturday, but I usually work a few hours. I have been holding out to do some substitute teaching on Fridays, but honestly, I got one call last semester, so it doesn't look very promising. With that in mind, I am thinking of taking another class on Fridays. I need to take Formations, but I'm not sure. I don't know anything about the prof. Part of it is the money, of course, but another part is that if I add 2 more hours, will my other 9 suffer? Alas, what's a girl to do???