I'm not sure if you've looked at the syllabus for the grad classes, but just in case, here's the on for Daily 5 and CAFE:  https://uiu.edu/academics/graduate/documents/EDU555.pdf . That may help you get an idea of the requirements for the class.  

I took the course this past summer for 8 weeks from May-July. The course is awesome and I highly recommend it!! I would say on average I spent 3-5 hours on it each week. Some weeks I spent more and some weeks less. The course is laid out in a way that you can set aside a small amount of time each day to complete your work for the week, or do most of the week's work all on one day. The teachers were wonderful and the peer feedback and discussion was really helpful. None of the work was overwhelming and I always felt the readings and lectures prepared us really well for what we had to do. Hope that helps. If you are thinking of doing it, you won't regret it.