I don't blame you! I have never tried a mystery quilt and I might would try one, but I think my first needs to be way more simple than the homework you have described. Homework would be ok I think. It would help me stay on target. I, myself, am a planner too! Unless it is scraps, I would have a hard time using my most loved fabrics in a mystery quilt. I like to know the ending, too.
Best of luck and feel better. I would love to see a pic of the finished block. I'm curious now about how it will come out.