If you are medical, you can find work in Kerrville or the outlying areas pretty readily. Depends on what you actually are certified for.
I know PA's looking for work pretty far afield, so the demand is somewhat down. Still, medical jobs are there. PM me if you wish. TheVA is always looking for Nurses, and techs.
Hog hunting isn't free. Everyone who has hogs sells hunts.
Hill Country Shooting Sports has 500 yd ranges and I think they are gearing up for a 1,000. Not sure about that.
If you are selling a house in California you might be able to get some land here, but it will have to be remote since prices have skyrocketed in places like Beorne, Kerrville, Spring Branch, Bandera, and other outliers. There's not a decent place in Kerrville for under 200k. I paid 210 for mine 6 years ago, and cant touch ANYthing like it for under 350 now.
The odds of making a friend who owns a ranch is pretty good in the medical field, but most people pay for a "lease" which can be a couple grand for a season, per rifle, and up to 10-30k for all year. I only hunt exotics, mostly Axis, since I don't care for White Tail. I hunt a friend's ranchito (small place) with low fences that harbors a roaming herd of about 300. I don't bird hunt, either. The fishing is great, the lakes are public owned, and the gulf coast is magnificent. You can camp on the beach if you have a 4 WD and a small trailer. Redfish, black drum, speckled sea trout, flounder, all excel. Bass, freshwater redfish, freshwater stripers in the lakes. Bass and Cat Fish in the rivers, stocked Rainbows in the Guadalupe River.
Personally, I wouldn't live in San Antonio on a bet. Little CA. Far too liberal, far to many people, traffic is horrendous. I say that having had family roots here since 1731. (no typo).
Hill country is nice, but the Trendy have started to spoil it. Fredericksburg is now "Wine Country" so buying a 30 acre ranchette is priced way out of reach for most.
PM me if I can show you around. You are going to have to do a scouting trip as it is. Took me 4 years of looking to find this place.