Buy the Ground First. The Cabin Can Wait.
The order most people want is house first, land second, and it never works, because the land you can afford has no road and the land with a road you can't afford. Flip it. Own the ground now, while it's cheap and empty, and let the cabin come when the money does.
This is twenty acres of high desert in Sierra Prieto, a long rectangle you can walk end to end in ten minutes, with a dirt trail already crossing it and the Guadalupe Mountains breaking the horizon to the northeast. There's no clock on the build, no power bill waiting, and no neighbor close enough to hear the generator (or to borrow it). Solar, a well, and a septic turn it into a homestead the year you decide it should be one.
You're north of Sierra Blanca, an hour and a half or so east of El Paso, with Guadalupe Mountains National Park up the road. That park holds Guadalupe Peak, at 8,751 feet the highest ground in Texas, and the fossil reef those mountains are made of was a seabed about 260 million years ago. Twenty acres feels smaller with that behind it, in a good way.
The trade is what the deed says you can't do while you wait: no camping and no RV living on this ground, so it's a hold and a build, not a base camp (which is also why the neighborhood will look like a neighborhood when your cabin joins it).
Some people spend a decade saving for land with a driveway. Others buy twenty acres now and build the driveway themselves.