Ditto on staying away from "Blue" States!
A couple of decades ago, I lived on the west coast of Florida had a 5,000 sf house on over an acre in a like minded community for under $300K...then the East Coasters started moving in. They sold their expensive houses up East and came down to Florida with cash offers (and often no job lined up, which is another story)in droves. The price of real estate as well as the very polite and common sensibilities of the area, took a rapid nosedive.
Something similar has happened more recently as people are fleeing California. People in Montana, Utah, Idaho and Texas are all seeing crazy prices in the housing markets as people from high priced areas like California, are moving in with cash offers. I bought my BOL about a year ago and it was in a bidding war with 8 other offers, but it was a rather unique property!
A million dollars is a bit much for land in Texas as long as you are willing to live rurally. You want to go suburban at one of the city islands of Houston, Austin, Dallas/Ft Worth, San Antonio...then yes, be prepared to pay 20,000-40,000 an acre. Otherwise, you can find good land for under $3000 an acre even less if you go west of The Hill Country; but, IMHO, and it is just my opinion, I would stay away from west Texas because of drought issues.
When I say good land, I mean, enough naturally occurring rainfall to grow a diverse number of things, even in moderate droughts, soil that renders good crop yields and preferably some type of natural spring water. The more edible plants that just naturally grow on their own, the better!
I see those things as being pretty much the foundation (after location) of any long term prepping plan because you can only store so much food before you will eventually need to be able to replenish your supplies. Additionally, the more naturally occurring forage around, the more large sized game, the more game, the less likely an area is to get hunted out, when given the same population stresses.
One other consideration, growing seasons. In the northern tier, obviously, the closer you get to the Canadian border, the shorter the growing season (beyond temperatures, the days are considerably shorter). Further south, you can grow year 'round, so if you suffer, say a hail storm that destroys your crop, you will be able to plant a new one without skipping a beat, making is so you only have to survive off reserves for only a couple of months rather than 6 or more.