Not sure how south in texas you are but peacock bass do well here in Florida from about west palm beach down to the country of Miami. They are IMHO 5x the fight of a regular LMB.
I can attest to this as well, caught a number of them in Fort Lauderdale in a smallish lake and they really threw a fun tantrum each time. And were delicious too.
I don't know if the 10 degree (approx.) difference in temp would make a difference between locales. I've heard peacock fingerlings surviving in as low temp water as 56.
