My experience is the same as OP: Typst is significantly faster than Latex. My book has all of table of contents, parts and chapters, figures, code samples, tables, images, and bibliography. These are all going to require multiple passes to layout. E.g. you cannot insert page numbers until you have laid out the table of contents, as it comes before other content. However you cannot construct the table of contents before you have processed the rest of the document. A typical novel won't have most of these, and so I think it will be substantially easier to layout.