I can't see Texas spending more on their military. We have an Empire-grade military. Texas wouldn't need, want or be able to provide 1/50th the military capability of the U.S.. There's really no need for the U.S. to have such a massive military, except that we keep finding reasons to use it.
If the only tool you have is a hammer everything starts looking like a nail.
I meant more as a percentage of GDP, nor more in terms of raw dollars. I think that since Texas probably represents better than 1/10 of our economy, they could manage 1/10 of our military.
Texans strike me as being very bullish on hammers.