I am having a similar problem, however I have recently received a very brittle map that has been stored flat for many years. We don’t have anywhere to put this map if it continues to be stored flat. Any suggestions about whether or not it is okay to roll it?
As far as giving the items numbers, my institution begins every map with “M” and them numbers it in the order received. We then document these in our “brain book” which is like a spread sheet.
Good luck! Sounds like a large project!