Dallas Uptown/OakLawn - think DuPont Circle lifestyle - gay, str8, whatever. Not many old buildings, plenty of off street parking and young, educated and balanced friendlies.
Google maps 75219, the area runs from downtown going north between 75 and Dallas North Tollway, up to Highland Park.
Also, the Greenville area, on the east side of 75, going north. I'm less familiar with that area. See Art Mann episode of St Pat's Day in Dallas.
That's all you'll need for a couple of years. See the
Dallas Observer for what's happening.