My brother and I bought some land to move out to the country and build a disc golf course. Click on my signature.
We started playing in 1995, starting searching for land in 2001. Spent 3 years searching for the right land to build homes and make a good disc golf course. Bought land in 2004, started building 1 hole at a time, got to 18 holes in 2007, built a pond in 2009, reached our current layout in 2010. Here we are.
One advantage we/you have is being able to take time to plan. You don't have to come up with the entire 9 or 18 holes, the way course designers do in public parks. You can study the landscape as you go along, and change things that don't work out.
If you're like other private course owners I know, you'll find that you work on your course a lot more than you play.
That's the much-abbreviated story.