This all depends on how insulated you want to be from people.
You can find some cheap land between Fay and FSM, but it won't be developed to the point that you have water other than a well. A lot of wells are not dependable. You can get electric ran to a place by the power co. for free, probably. School rides are pretty long to get to town, hard on the kids, I imagine. Lot of dirt roads that are treacherous in the winter. Not trying to sound negative, that's only if you want to be way out. I live in Winslow area, and we are down 3 miles of dirt roads. Never seen Googlecar. But we farm and I like it that way. Only leave the place once a week. Pretty farms east of Winslow in community called "Sunset", and on up that road is a community called Health, AR. You could just about disappear out there. Only trouble is the commute.
Purchasing land around here can be a pain, because it's hard to find a place that has all the rights to it (timber, mineral, etc). Sometimes there's access issues. Western Washington Co. (Lincoln, Summers) may be better about that, and also Western Benton Co., but Benton's pop. has skyrocketed. Only reason they haven't ran the hillbillies out and paved over the Boston Mountains is development needs water. Northern Crawford Co. is pretty, too. Town of Chester is right close to I-49.
As far as drought, it's not TX-level, but we're only 10 days away from one at any time. Just across OK state line is level 1 drought. You just have to collect water for your garden, or have a good well.
RV would be assessed as "personal property" taxable, no mobile home tax sticker as far as I know. If you don't ever drive it around, you may not even have to pay that.
Also, no building code in Washington Co., Benton Co. has one. You build whatever you want, whenever you want, in the way that you want. But, you also shoulder the perils.