After some minor indigestion with the prescriptive editorial feedback, I made changes and resubmitted the manuscript for a second Prescriptive Edit. It's Sunday, so it should be on the editorial consultant's desk first thing tomorrow morning. As I understand it, there are two major edits left.
The next one (cover copy polish) is included, so that's nice. It's where I expect to need the most help: helping me design the cover and pick a title. As everyone knows, computer geeks like me are not good at visual design. I will gladly accept all the help I can get in this area.
The last edit is line-editing to bring the manuscript into Chicago Manual of Style splendor. I am more than happy to pay someone else to move commas around and respell grey to gray. I'd've paid someone else to do that if it hadn't been included in the service- what an awful job.
The ball is back in their court. We shall see how things progress.