how many hours of content do you estimate is in these
Heya. It's hard to say, as it really depends on your reading speed. For someone with an average reading speed, if you try to experience all of the scenes, there are probably about 15 hours of content with our most recent update.
As I say, though, this will vary widely depending on your own speed, so it might offer you a lot more or less.
I hope that helps :)