Two words....Water Rights.
The cheap land is cheap for a reason. You'll see ads for such land, and it usually has no water, or irrigation. Well drilling is starting to be restricted in some areas.
Some towns have a shortage of water and have had to stop issuing building permits for houses...Twisp, WA is an example.
Staying away from the Federal Gov? Out in the west? The Federal Govt. land may be your next door neighbor. I used to work for the Forest Service and we would get phone calls from people (new to the area) asking why their road was not plowed in the winter.
That's another thing. Real Estate agents will advertise, "borders National Forest land" which does not mean it will be untouched or your playground. It is likely to be untouched, due to budgets, and that means it will not have fuels reduction work done on it, and your place may be next door to a future forest fire. Or, but not likely, you might have a logging operation next door, with noise starting early in the morning.
The snow plowing? If you access your property by Forest Service roads, you'll need a permit. Plus, the roads may be in terrible shape year round due to cutbacks in budgets.
ATVs and off road recreation? That's starting to be more restricted, as is target shooting on public lands. In fact, we're starting to get wildfires started from people shooting exploding targets on public, and private lands. Expect to see more regulations.
Open Range? That means that if you don't want cows in your yard or garden, YOU will be the one responsible to build a fence and do the upkeep. That came as a shock to folks moving into one valley.
Nope, I don't live in what you are calling the Northwest, but I grew up and have worked in Eastern Washington, which has the same issues as the rest of the west. We are getting more regulations as our population increases from folks moving here. Whether your spot will stay with the same political leanings cannot be guaranteed. As Slow Cowboy said, our main immigrants, who become very influential

are are folks from California who can sell their CA houses for a good chunk of money and then buy a much bigger place. They bring their CA values with them. However, Kalispell, MT natives call the north part of their town, Seattle. In other words, the west is a place people move to, and bring their same expectations and beliefs with them. I've done some unscientific research and estimate that 70% of our Warshington population moved here from another state, and I find myself sometimes thinking about Northern Idaho, or Seattle, MT

because it reminds me of how this place USED to be....but if I move, I increase their population and the ruination continues. Naw, I'll stay in my area. We suspect it can't be overrun due to flooding and septic tank issues.

I'm now settled on the wet side of the state in a valley that is far enough away from Seattle and Portland to make it less desirable.
Have you done your homework? This may be a good place to start.
http://www.hcn.org/