Lots of opinions here based on little experience, so why shouldn't I chime in.......based on 2 years of investigation of vineyards in WI/MN
More than a couple acres, you need a tractor to power the sprayer; you need 35+ HP. It's not Cal-E-Forn-Yah, so you will spray far more.........like 5-7X/year. 3 years partial harvest, 8 year payback minimum unless you are already a farmer. As I remember, 10 acres is a full time job, and more. Learn to like winter as your summers are too busy for leisure. Wineries claim they want your grapes; don't plant til you have an agreement/contract.
Midwest wineries are about entertainment, as the quality of wine they sell today can be bought for 1/2 the price at your local liquor store. Location, location, location; music, food, fun......wineries are not ag businesses, they are party places. The tractor choice for a vineyard is a minor issue until you have a market...find a home for the grapes before you plant; you are not early to the market.
It's still possible to make it as a vineyard in the Midwest, but you can probably make the same $$ by sitting on your butt and buying bonds.