If you are very lazy, I would suggest having MWF instead of TTH. I had TTH once, having a 4 day weekend every week with another holiday inbetween is not very good for work ethic. The 4 day weekend turns into a 6 day weekend sometimes, and then you're taking a week and a half off. A big no no for grades.
But if you're not lazy, then go with TTH. (But it sounds like you might be)