In other words, it's efficient in paring down the list to do this all at once. The 70s and 80s lists have been already pared down by me, even if the survivors need more.
So I don't quite know what to tell you. It's a lot of work. Some of it I do not mind because I have to choose films often that I want to see and have the patience to watch and also that my wife will tolerate. At the moment, I don't want to do anymore. But if I should suddenly appear in the future with a narrowed down list of N-Z, don't be surprised.