I'm still debating whether I need an additional chapter. All the chapters in this novel are pretty short, on average 3300 each, so I might have time. I won't decide until a draft of chapter 22 is done.
My deadline is the end of October, but really I want to be done on Sunday at the latest, since it will take time to print, and make sure all the pages are there, and box up, and courier. I don't want to be doing all those things at the last possible minute, I hate that kind of rushing. Plus, I need to pack for World Fantasy.