“But I’ll be back as a tourist . . .”
I bet you won’t. I left my native California nearly 20 years ago, and I have only been back a very few times for family reasons, and had I no family there I doubt I would have ever gone back at all. There is absolutely nothing I miss about it, especially the FTB!
There are a whole lot of other beautiful states to explore, not to mention the rest of the world, and I think you will set your sights forward, not backward, when you leave.