Ah. I know plenty of people from the Cambridge/Isanti/Princeton area. It's definitely a good area for paintball, and rural enough no one will bother you much.
I'd be happy to take part when the weather improves, so keep me in the loop.
Also, try using Google Maps on your property to get a different perspective, and map out your field ideas using a GPS.
Once you have some good ideas of playing areas, make sure you do a detailed walk-through for safety hazards and unfriendly wildlife.You can't eliminate everything, but remember people will be running around in this area. If you stumble on a gopher hole or a rock in a trail when you walk through, someone will probably hurt themselves playing. And you definitely don't want to run across a hornet's nest or something while you're playing.