More importantly, I need to write out some character specific notes that are particular to this specific book, besides the overall series notes I already have, to see who is going to do what. Those notes are way more helpful to me than any sort of outline. I actually tend to eschew outlines entirely, since I end up ignoring them almost entirely.
Having the few notes even in outline form do help to clarify a few things, and I've got character beats, goals, and motivations rattling around in my head, so that should at least get me through the first 10k. Writing down and seeing in front of me who's doing what will help immensely.
I hate that I know more specifics about book three. ;)