Plan on $2800-$5000/acre for startup. Depends on if you can get by without drip irrigation, the low figure is for the trellis & plants. That small an operation means hand-picking, which is a bit labor intensive at 1-2,000 pounds an acre. You'll also need a drying building, which you'll only use a couple weeks a year. Lots of natural gas or propane.
Hop yards run 500-1500 acres and use automated pickers, so finding info for a small operation will be tough.
If you read German, most hop farms over there are in the 4-5 hectares. They tend to specialize in flavor/aroma hops and that might be your best bet.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk