Writing like a loom

Yes loom, not loon (although the second also applies). Two weeks now until I'm due to submit a manuscript for the middle book of a fantasy trilogy. This particular contract (a kind of ghost-writing gig for a book packager) puts me on a tight schedule, which means I should finish the first draft at the end of August, leaving me a bare week to edit before submission. A week's not long – writing is rewriting, after all. I will have a chance to tinker further after the packagers have made their editorial comments, but it's tight. Which means I have to make sure the first draft comes out as fully formed as possible. Like carpet coming off a loom.