I have not touched the side story in the past couple weeks, mostly because I am trying to get scenes and plot points organized. The main story will probably end with Chapter 21 or 22, though a second, continuing series is planned. Maybe a third as well, though the third would be pretty removed from the main one.
Chapters 18 and 19 will both be character-focused, then 20 and 21 will be plot-focused. I don't yet know if I'll need a 22nd chapter or not.
Also of note, both 18 and 19 will see Frank breaking a character selection rule in each chapter (different rules), but this will be done because he has methods to deal with the anticipated problems.
Chapter 18 - 21 pages
Chapter 19 - 1 page
Chapter 20 - 11 pages
Chapter 21 - 13 pages
For comparison, Chapters 16 and 17 both read as 52 pages in OpenOffice (courier new 10). I expect the new chapters to reach somewhere in the 40-50 page range. Chapter 14 is my longest so far at 63 pages.