Thanks, I've seen some good advice here. I see that War and Peace has several parts. I think I'm going to make this tree a project, and read it part-wise, reading a smaller book after each part. Estimating the time I'd need to read this, using IT and Shogun as a benchmark, it would take me 40-45 hours of leisurely reading to finish this book; maybe 30 or so if I start speed-reading, but I don't really like to do that.
OT: Plugin problems...
Spoiler:
Edit: Strange. After I fiddled with the FRE option yesterday, my page counts became different. I deleted the FRE-column I created, and re-counted all books in my library. Some are now longer: Noble House now even exceeds 1300, topping out at 1308. When I first did the count, I only had EPUB books in my library. Can it be that Count Pages supports AZW3 and prefers this format, because I have a Kindle connected, and that AZW3 books are "longer"? I'll look into that.
Edit 2: Very strange. I removed all AZW3 books from the library, recounted, and still many books are longer now than they were before. Most aren't.
Edit 3: Problem solved. I've been updating my library, and doing things like putting high-res covers in books, and such. When Sigil saves an EPUB, it becomes larger in page numbers. I think it's because Sigil uses "Tidy" to layout the HTML code, and so you uses more characters. The plugin probably counts all characters in the file, not only those inside the <p> tags, to determine the number of pages.