Your tale make me smile. My head explodes on a regular basis. It sounds as tho you have a pile of fabulous fabric and an even bigger pile of great ideas about what you could do with it. I am sure things will look much clearer after a couple of glasses of wine (or a good night's sleep
)
I love the idea of a reversible quilt. Your best bet would be to make a firm decision on the size, pattern and fabric for ONE side. Figure out how much fabric you will need for THAT. In fact, you could even make up those blocks and set them aside. THEN you can make your decision about the second side. The only thing that has to be the same, is the size of the block.