DOn't worry Golden, you can do it, you just need to be smarter than the average bear. You can learn a lot by getting the USGS topographic/contour maps of the area--most states have a book with all the maps in them( which you can get enough info from) but you can order more detailed bigger scale maps from USGS. People build farms and subdivisions where land is flat. You can figure out the more remote areas in the hills that will be the last to be developed--because it's difficult to develop that kind of land on a large scale(water issues, erosion, landslides, road building on steep slopes, emergency vehicle access). Of course that stuff will be hard stuff for you to deal with too, but it's much more manageable on a small scale, and you can decide what trade offs you can make.
The maps will tell you the kind of roads(gravel, pavement), even locations of houses if it is rural enough(our house is on the USGS topo map). You will be able to tell where there will be water flow, wetlands, swamps, seasonal springs and streams. SO just saying if you know your way around a topo map you can get a lot of info from them. Then your relatives can go do a drive by and check out the neighborhood.
You can be able to make a pretty good guess about how close subdivisions will get, and steer clear. THere's a lot of good land out there that can be used for garden and fruit trees (I'm guessing you will want southern exposure?) that will be inappropriate for farming or pasture--but even then chickens dont' need flat land, goats have four hoof drive, ya know?
Also look at that topo map to get a good idea of a home site and the road in you will have to build. Just sayin that yes, real estate agents are liars(never use their info to make a decision) and looking for land from far away is tricky business, BUT you can be smart about it, if you know where to find the information you need. You might want to see if you can find a guy to cruise the timber to give you an appraisal of the timber value, tree condition and how much there is--they should be able to give you a good report of the trees(I mean, you ARE paying them, and if they do a cruddy job they don't get more work, eh?) have a relative walk it with the guy. You should be able to pump the guy for info on soil conditions, local microclimates and water supply as well. You can also call up the local well drillers to get water info too. Call the septic guys

I have found the local timber cruiser/well guy/septic guy to be full of GREAT useable information.