Based on my definitions. Owning the 3 rental properties makes you owner class as that is private property, also when you pay off the mortgages you are going to be in a great spot right?
Farms are weird, if you only had the farm and have hired nobody else to help you run it then working class. If you hire people, well then you are owner class.
You both also have jobs on top of running a farm? Out of curiosity how do you have the time to manage your farm and work at the same time?