And now mechanics in the buff will probably end up in your novel
*SNORK*

Now there's an idea...
When's this piece of word-smithing going to be finished? Or is that a bad question to a writer?*
* I know the answer. My textbook never got finished due to re-writes requested by the publisher.
I've got more than half the story down in writing now, but I am also editing / polishing as I go along, so there will be less to do later when I go through the manuscript again. The rest is planned in note form, although there is a certain amount of elastic in the plot to allow for the development of the characters and such.
The length isn't a daunting thing, as I've got three major research dissertations under my belt along with all the associated trimmings that go along with that sort of stuff. You just got to keep plugging away, really. I'd probably say another year to get the first draft done, as it's going to top out somewhere between 150,000 and 200,000 words. So a Mills & Boon it definitely ain't...