Welcome to the Mitten State!
It's a vast state, with varied growing zones. There's
water pretty much everywhere, but different crops thrive in different parts of the state.
If you're hoping to become orchardists, look to the north, on the west side of the state. Mint thrives in Central Michigan, which I'm told is the mint-capital of the world. Strawberries do equally well in that area.
Also, keep in mind that the further north you go, the more snow you'll have to deal with. Last winter was incredibly harsh in my area, and even worse to the north. Greenhouses help immensely, but I can't imagine growing
enough food to sustain a large family in the Upper Peninsula. Look at average snowfall, rainfall and last frost dates, and plan accordingly!
Zillow is good, but you could also try the Mid-Michigan and Norther Michigan CraigsList pages. You never know what treasures you'll find there (or what might find you, if you post a Wanted ad). I've seen some nice properties listed in Central Michigan, between Lansing, Grand Rapids, Mt Pleasant and Flint. Also, not everything is
online. If you're able to travel to Michigan to look for properties, it never hurts to ask around at
local feed shops, neighborhood hardware stores, lumber yards, etc.
Good luck to you and your family in the search and upcoming move. If you want to talk more about specific areas, please don't hesitate to ask me... and don't forget to check out the Smitten in the Mitten Forum!
https://permies.com/forums/posts/list/40/13349