I am still doing a little happy dance that I got to the end of Part I. And it has a big arc, and lots of little arcs, and I am falling in love with my characters, and they have many and varied motivations for their actions, and there are no absolute villains (although some do behave villainously at times), and there may even be a few themes lurking below the surface. Like sharks. A fine place to be in a first draft. :-)