Troop198

How big a tent are you sleeping in? In most of Texas you only need a three seaon tent or maybe even a warm weather tent.

You could get a bigger tent and try a cot.

But I degress. you asked about bags. Sorry but it depends is the best answer. Keeping you warm is the main criteria when selecting a sleeping bag. Choose a bag rated for the season and temperature you’ll be using it in most often. So if you camp in south Texas (South of I 10) as opposed to say North of I 20, the winter seasons are different.

The temperature rating of a sleeping bag indicates the lowest temperature at which an average user will sleep comfortably (and wear a hat if you get cold)
Rating also assumes you have a ground pad.

If in doubt, get a colder-rated bag. You can always vent it by opening the zipper on nights when it’s not as cold, 30 degree fits most of Texas winters I added a liner for colder days, that also works by itself for those nights you just need a cover. A liner can be used like a blanket and the confines you describe go away.

This all changes if you want to hike alot, look for other discussions on this forum for sleeping bags. there are some good discussions.