Biggest things I think are deciding if you want to use more than one type of page protector or stick with one, and deciding if you want to do weekly spreads or just do monthly, or filling in with pictures when you want to.
I originally bought a mixed set of protectors, with more than one layout and then after some time realized I only wanted the one style of protectors so it was a waste of money for me. Wish I would have just gotten all type A to begin with
