I've been looking at a way to schedule work. This is a system I picked up from Joel on Software where you break the various essential tasks to completion into hour-size chunks in Excel. Example:

Feature	Task	Priority	Orig. Est.	Current Est.	Elapsed	Remain
Spell check	Dialog	1	8 (hrs)	12	8	4

This way, when I go through the book with missing building section, missing HVAC, missing/extra doors called out on the door schedule, missing foundation plan or whatever, at least I'll know roughly, but convincingly, what size is the heap of trouble that I have to deal with. By creating a spreadsheet like this, I can defer or avoid altogether spinning wheels on something not needed to push thing out the door.