Say, for example, California. I would be comfortable with a 50 or 100-mile wide stretch starting at the Pacific going east, with Los Angeles at the south and San Francisco at the north. Leave the rest of what is called California today in the United States and secede from what's left; they can call it Brownville (after the current Governor). Or we could call the remainder Fremont.
Basically, we vote the LA to SF portion off the island, on a bigger scale. They don't think they need us, anyway.
I'm sure other people could come up with similar proposals.
Your proposal sucks.