10 acres being "enough" depends on your use and your wants. It's a lot if you're in the middle of KC or on the lake. Not so much in the middle of the Ozarks. If you want your own shooting range and don't want your neighbors pissed all the time, that's a little light. I'd think 20 minimum. If you want to protect yourself from incoming windmills, it's hard to get enough.
