Nice - SA’s a great city. I went to college down there. Check out the Japanese Tea Garden & Blue Star arts complex (I think that’s still around).
My wife and I had our accountant referred by a friend we trust, and we’ve had a good relationship so just stuck with him for 10 years. He’s fairly high up at a sizable & reputable accounting firm here in town, and he’s both patient & helpful, so we’ve always just trusted him.
Do ask people locally, as you want someone who knows the intricacies of Texas tax & business law. The Rackspace founders are in SA, and Austin with its billion or so tech companies is only about a hundred miles to the north, so you should have some excellent options.