+1 for Google Earth. Zoom in as much as you can and get a good idea of the geography. Google Earth is nice when you are dealing with a property that is far away. I've used this method to help on very large stretches of State Forrest land here in PA. It will give you good starting points and then you can learn more once you are able to get boots on the ground and move around in it. It's also nice because you can see actual elevation changes when you move the map around. For me this is easier than looking at a topo map. Use this to find the nice pinch points near water sources and go from there.
Good luck. Doing almost 95% of my hunting on public land, I'd love to have this problem to deal with.
