Only you will know if you should ultimately sell, but based on everything you said, I agree with those who say hold off until you've given yourself more time to settle in. Or, if you feel really anxious each time you look at your closet, maybe you can find some middle ground and just sell one or pieces. Perhaps another option is to maybe carry some of the less loud, non-mono pieces for a while as you transition to this new area. DE and DA may not be as recognized where you are?
When I moved to the Midwest, I found that it was the hardest adjustment I had ever had. I've lived in many states across the country, and the Midwest, for me, was the toughest. I live here now, but it took years to feel settled.
I'm in an area that I would say is more Michael Kors/
Coach/Coach Outlet than designer. When I started getting into designer bags I also felt self-conscious. But then the first time I went to a Pure Barre class, I saw like three LVs stuffed into cubbies

And while the nearest LV store is 90 minutes away, every time I go there, it's packed. So fellow luxury handbag enthusiasts are around me, but it's just harder to spot. As time goes on, I also find myself caring less and less what others think, so it's all working out.
My final thought is -- will you travel? If yes, would you miss traveling with your bags? My sisters live in California and I admit that I feel much more comfortable carrying my designer bags when I'm visiting them. It's almost harder to spot non-designer than designer in some areas out there, so there's no concern about feeling self-conscious.
Good luck with your decision!