Great ideas here for your hexie project. The only other thing I would suggest is to start now making a few hexies in a few different sizes to determine what you would be comfortable with. By doing that, you will also determine what you need to include in your "take along" bag/box. I use the zip lock bags usually. As someone mentioned, you can see what you are looking for. I print the papers and cut them out.........great mindless job while watching TV etc. I use one inch hexies, and cut 2 1/2 inch squares of fabric. Pin the paper to the square, then lop off the corners, leaving plenty for seam allowance.
Hoping all goes well with your surgery, and for a speedy recovery.