Hi turniphead. I'm not an editor, but have had great support from one editor in particular, and I write mainly in mother/son incest. Early in the piece, he suggested breaking a long story into chapters; it makes for easier reading, and certainly easier editing
Could I suggest you think about breaking your story into, say, four 8,000 word chapters, then post them quickly after an edit and any re-write. Strictly IMHO.