Just adding a few things, mostly about building and buying, to the already great answers. Always check the floodplain maps if there are any water channels nearby. It will severely restrict what you can do with the property. There are DCNR grants to turn lawn into native habitat. I have two acres of turf I don't want. Violent crime isn't going to be much of a problem. There generally aren't murderers roaming the woods. Isolation does come with risks, like access to emergency services. But getting murdered isn't one of them. Crackheads don't tend to live in rural areas because there is no one there to buy crack from. Meth can be an issue since just about anyone can make that. But they still aren't likely to do worse than break into your shed or garage and steal some tools or an ATV. And that is unlikely too. They are too busy being high.

Make sure you can get decent internet unless that isn't a concern for you. I had to pass on a few places that checked more boxes than what I bought because I could only get satellite and I work from home.

Have a civil engineer look at the land before you buy if you are building a house. Not all properties are buildable. And even if they are, it might be considerably more expensive than you expected. For instance if they have to excavate rock to install the foundations. Also, it can take a long time to build a house. So you'll be paying for two properties for a while. A land developer doing a sub division can get a house done in a few months because they need to turn over the investment quickly and get work done cheaper since they can provide a lot of work. But a custom home can easily take over a year. Or more right now. I have friends who will have waited over 2 years to have a factory framed 800 sq ft vacation home. If you get a house built also try to contractually lock in material prices. You don't want to get screwed if things go nuts like recently and suddenly lumber costs go up like 400%.

You will likely be on well and your only power source will likely be electric. You also won't be a priority in a power outage. So plan for a back up generator with a backfeed disconnect. Even if you use natural gas, oil, kerosene, or propane for heat, the furnace will be electrically controlled. So you still have no heat in an outage. You also don't have water because the well pump needs electricity. Rural areas tend to lose power more because of trees coming down on overhead lines.

Get a buyer's agent, not just a realtor. If you haven't been through the real estate buying process, it is a nightmare. I negotiate multi-million dollar contracts for engineering work on critical infrastructure and that is considerably easier. It takes longer of course, but it's less bullshit.