I did it and I am so happy:
German 71 (12 credits)
Social Science/History 66 (6 credits)
Intro Sociology 66 (3 credits)
That means that in 3 hours and 15 minutes I collected 21 big credits
Fatigue definitely was a factor and I am not sure I want to do it again. In this case, I felt I had to push a little as the latter two were just pass/fail anyway. But the brain is a little fried.