After more discussion with my wife, we have decided to keep the hangar in Arlington for the time being. I will also keep a tie-down here in McKinney. I will keep the plane nearby during fair weather, and move it back to the hangar whenever T-storms are forecast. (Both my wife and I work from home, so our hours are flexible.) My wife has agreed to share her car with me when my truck is in the hangar and the plane is here. That way, I don't have to pay for a rental car to get the plane. (She doesn't do highways.) Total cost is only going to be $410/mo, which we can afford.
Meanwhile, I am going to look for a larger hangar, that will fit a twin in the future. The waiting lists for those are usually much shorter. (I think I'm #6 in McKinney for a 60x40 for $600/mo.)