We get so much wind I get nervous when it's still. I stopped with the raised beds in wind country. We don't need help with drying out the soil. The advantage of earlier warming is lost due to the difficulty in keeping the ground moist. Adding organic matter will help your clay and the drying out problem. It does get better, really, but it takes loads. Start begging the neighbors for leaves and grass clippings. I have 3 contractors dumping stuff at my place now. Of course, everyone here is so broke no one spends money on herbicides, so it's fairly safe.
One thing I did last year for my corn was dig a 1-2" depression/basin in the beds and plant in that. About 1'x2' ovals. They stayed damp significantly longer than the surrounding bed. I'm going to try that in a lot more plantings. It's not that it holds water very long, but it is a bit protected from the infernal wind. So it doesn't take much protection to make a difference.
Can you get spoiled hay bales on the cheap? Use them as a windbreak until stuff gets established, then as mulch in a few years. If you can get a lot, you could make raised beds edged with hay bales, which will gradually
compost from the inside out, doing three jobs instead of two. A couple layers of plastic snow
fence (google it, you'll never find it in San Antonio!) would break up the wind quickly while your hedge gets going. I
should try that too, see if the goats will eat it.
For the long-term, I'm planting a food hedge-
fedge-next month. I had to change out a few plants-Scotch pine instead of poplar and alder and didn't get the black cherry, but it's going in with what I could get. Hopefully it grows faster than the fruit trees going in this month. In the unlikely event I can get water right to the
fence line, I may toss in some vining plant seeds to climb up this year.