If you don't mind me asking, how do you make it work for yourself? Are you single, so you don't need more? Or perhaps you're closer to a 'hobbyist' farmer? (although 500 acres is also well beyond a hobby haha)
It's somewhere between an extra job and a hobby. It's just touch for planting / harvest season -- lots of nights / weekends / day job PTO along with getting help from relatives.