If Eliezer writes new chapters after 78 at a constant rate while publishing existing chapters

For human-psychological reasons I expect that "the drive to complete more chapters" will become appreciable pretty much the moment 78 is published (and not much before).

Even if I am wrong, I don't think "writes at a constant rate" is a safe assumption to make about Eliezer's fiction writing. (This is, of course, tongue in cheek.)