Man, this is a lot of work. But I can see the end from here. Pretty soon I'll be reduced to cleaning my desk for entertainment.
I plan to write a long essay (or series of essays) about the process I've gone through, but I must wait for everything to settle, and to understand my confidentiality requirements, before I can do so.
My thanks to everyone who's offered advice, professional references and good wishes along the way. There's surely more to come. Just hopefully less of it.