Licensed LPFM is hard to get if you're in a city, it turns out. I blame the NAB, who basically conspired to stack the deck in such a way that the adjacent channel protections which apply to a low power station are more stringent than a full power station.

Full disclosure: I'm on the board of an organization which recently was not granted an LPFM license when licenses for PA were granted.

I recommend pursuing part 15 broadcasting.