You have done your research, you know what you want in land and out of your land. Time to start looking.
However there is the issue of money. I really do suggest paying outright cash for your property, but if you are unable to and willing to get a loan and have a person or bank willing to extend you some credit, well beggars can't be choosers. Make sure you go over the details with a fine tooth comb Be sure you are not getting in over your head. And don't relay on your land to turn a profit quickly, it could but I wouldn't hold my breath over it.
There are some land auctions coming up in Kansas. You can find a listing here at Land Of Kansas
General Land for Sale can also be found at Land of Kansas
Be sure to make nice with a Real-estate agent. They can find you incredible deals that you might never have found on your own.
If you keep your eye out on all those free listing rental ads, you might be able to stumble upon a good deal. Talking with others could also lead you to a For Sale By owner situation.