Hey I used to live in ND, I know plenty of small towns that could be the site of this new congregation. Except even a cursory glance at a map would probably be enough to kill the charade (Finley, population... 27!?!)
Better would be to pose as say, a suburb congregation. There's a dozen of them, who knows what the name of all of them are. And they don't have their own Hall, they share with some other (real) congregation. "Yes Im from the Spruce Park Congregation here in Minneapolis, we share a hall with Blaine..."
No Apologies