I've put up a number of used systems, and usually it's pretty easy to reconfigure nozzles for my particular setup.   For some, I've had a dealer run a chart, but usually I can figure out what I need with a free program called "Pivnoz".  It's not fancy, but if you figure out the tricks of using it, it can work pretty well.

If you are interested in used nozzles, there are generally options on Big Iron, etc., that would be handy for you in Nebraska.

If you want to start over with all new, I'd guess somewhere between 5 and 10K depending what you need or want.