DIY,
I hunt hogs 1-2 times a year down on the coast in Cali, which is a long drive from my home in Idaho, but it is a blast. Where I hunt the shots can be long, but unless they are in the barely fields they will be in or next to brush. I hear in Texas, since it's so flat you will usually be in the brush with them. I mention this as the length of the shots may be limited a high % of the time. You might want to bring the gun that you can shoulder and acquire the quickest with. Hogs aren't as curious as deer, meaning if they do hear or smell you they will decide where they want to exit and bee line out of there without thay deer like look back. The other thing to consider is, they don't leave as good of a blood trail usually, so pay attention to where they head after the shot. Of the 6 kills I've been around most have died fairly easily, including a few with 100 gr noslers from a 243 at 300 yds, so you don't need too much gun, but you don't want to make a bad shot. Shoulders and lungs for sure. Head shots only if you have a super accurate gun, a dead rest, and a resting heart rate under 90! Good luck.
PS Did you know we do have some isolated wild populations of wild hogs here in Idaho. This is not fantasy, I was in the office of a Fish and Game officer when he took a call about a sighting. I figured the caller was misreading sign, but the cop said they had "multiple" reports from the same area and had seen both the rooting and animals himself. Don't ask me where, but I will say it's within 50 miles of Boise.