I have a research course for learning how to write proposals, conference abstracts, etc. that seems straightforward and not too much work. My advisor teaches the course, so I already know what he expects and we already have proposals in revision from our personal meetings. My statistics course is for undergraduates, and I already took a similar course for my bachelors. Other than the homework, I don't see this being a big time requirement. I also have an online course for a certification I'm working on. It's also very straightforward and doesn't appear to have a large time requirement. I like that I can schedule the lectures and discussions in my own time. Finally, I am taking a 10 week short course for teaching in natural sciences. It is going to be more hands on and the majority of the work will be done in class, instead of at home. This minimizes time requirements as well.
All in all, I think that my course load is light, but I wanted it that way for my first semester. I'm fortunate enough to be on a fellowship, so I don't have to TA or be a research assistant this first year. That relieves a lot of stress and allows me to focus on research proposals to get things rolling. I'm also thinking about writing a literature review this first year, since I can't collect any data in the field until summer. It'll depend on other time requirements of course, but the first semester is looking great so far.
Edit: I didn't realize how different semester system is from quarter system. I took some semester courses at the community college, but forgot just how spread out they are. I get an extra month to learn what I was having to do in 10 weeks before!