Without having done anything like this in the past, based on your thoughts and experiences I would try a combination of 7 and 1: Preload one AVPlayer with the first couple of seconds of the 10 follow up videos. Then skipping will very likely be faster and more reliable due to less data. While you are playing the selected piece, you have enough time to prepare the AVPlayer for the rest of the selected follow up video in the background.
When the beginning is finished, you switch to the prepared AVPlayer. So in total, you at any given time have a maximum of 2 AVPlayers loaded.
The asset may not ready once you create it, it may does calculations like duration of movie, be sure to contain all metadata of the movie in the file.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.