In my opinion, trying to plan a precise study schedule isn't very effective. I prefer to study until I have learned what I intend to learn. However, on average, I estimate I spend between 20 and 30 hours a week studying outside of class; perhaps about half of this time is spent on homework or other assignments.
I'm sure each individual will learn at a different rate, though, so it's probably best to answer your question with your own experience.
Also, keep in mind that using hours to measure studying could be very deceptive: if you are distracted, tired, or uninterested, you will probably learn more slowly (and more superficially and with less durability) than you would if you were focused, alert, and keen.
Impressive routine, but I think the average person would suffer physically and mentally with such little sleep.