That's what I'm giving myself. Six months.
80,000 words. 16 chapters. That's 5,000 words a chapter. Two weeks to outline the book, then a chapter a week for 16 weeks. A month to edit. That's 22 weeks. Add in four weeks for slippage. That's six months.
I'm not sure if I can do it--but I sure as hell won't if I don't try.