I just wanted to say thanks for your response. Your comments and suggestions have been uniformly kind and helpful, and you always come across with the links, too!
The Pidge and I had a really good talk about all of this yesterday, and I think we have reasons to be reassured by how similar our goals are, and our plans for how to handle this. Bottom line, it'll be a learning experience no matter how it ends up. I hope for both our sakes, and for the sake of our as-yet mysterious Third, Toilet Seat Guy, it ends on a positive note.
In our three years together Pidgie and I have gone through some wacky and scary stuff together, and through it all our friendship has been solid as a rock. I truly believe that no matter what happens, it always will be. That comforts me.