I've been following along with your story and I can imagine the decisions you have to make are enormous.
I also have a dog who is my whole world and I chose not to move to Bali because I wouldn't leave him behind.
If you really want some ideas or advice here is my take on things:
1. You have only been back with blue eyes for a week, and although he seems to have changed I think he needs to prove himself for a lot longer than a week for you to feel you should rush back.
2. Since you have so many loose ends to tie up back where you live, perhaps once you are ready, start the process of putting plans into action with the goal of potentially moving back to the city, (start packing up your house, get divorced, etc) while at the same time keep up your relationship with blue eyes and see him on weekends?
3. Could you go back home and get the dog that you say will have the hardest time adjusting and bring that dog to the city on it’s own with you for a few days to spend some time helping it adjust and see how he goes?
I guess what I'm saying is take things slowly. You don't have to jump back into moving back in with blue eyes immediately. You could continue to see him on weekends while you take the time to tie up loose ends?
This way you will hopefully over the time see if blue eyes really has changed and you will also be more comfortable in seeing what decisions will serve you best.
(also one last thought, with the dog you are worried about walking around people, if you were to get up early, like 5am, could you walk him then, at the time of the day there may be less people walking in the streets?)
Whatever you decide, don't rush the process. And do whatever you need to gain happiness x