score:6
From a colleague who had a similar itinerary (only knew major stops) the following seems to be all you need in your itinerary:
If your itinerary changes, this shouldn't be too much of a problem, assuming your end date and flights are still correct.
My colleague had to change his itinerary, so kept his original printout, along with an updated one in case he had to tell authorities that he had planned one set of trips but had to change to a different version. As it happened, he didn't need to inform anyone of the changes and had an excellent visit.