I admit I have not read this entire thread.
But I will give my opinion.
I think the first thing to think about is the DOG.
What a hell of a trip it will be for the DOG.
First, will it be allowed to travel on board with you or will it be in a cold, noisy hold?
Where will the DOG pee during this long flight?
I have seen some dogs with really bloody feet on the Camino.
House dogs are not used to walking 20 kilometers every single day on a variety of track,
even dogs who have gone on camping or hiking trips. This is different.
You could risk grave injury to your dogs feet and hips, booties or not.
Where will you sleep? Not all places are going to allow (or welcome) your dog, nor are all pilgrims, some of which may be allergic and may not appreciate the dog
What about farm dogs - how will you protect your dog from attack? Is the anxiety worth it?
What about food? Does your dog have a special diet?
Will you pick up and carry his poop along the Camino?
I just don't know how I feel about taking a dog on the Camino, especially if you are flying from the West Coast.
It doesn't seem fair to the dog...
I'm gonna duck down behind my desk now because I imagine there will be some incoming tomatoes. . . I just wouldn't take my dog. Nope.
But if you do, best of luck and Buen Camino!
I hope you'll blog and post photos for us.