You know what they say in Texas.You will be well served by your UL gear plus a mid-layer option for most days. I spent most of last Archery season in LW pants and LW hoody with a Fanatic fleece hoody in my pack when needed. There were cooler mornings where I added a LW merino base layer and a Stratus vest and only few times I needed more than that.
It's a mixed bag of weather possibilities in Texas. You might have to layer up in Oct and then find yourself be able to go wade fishing in shorts in Dec. This past Feb I was getting stuff out of my mountain gear storage bins to wear but only for about a week.
Welcome to Texas.