I'm quite familiar with Wisconsin. Though I haven't lived there, I have relatives there and have visited a lot throughout my life.
Big things off the top of my head...
1.) I hope you're an outdoors person, or a tirelessly indoors person. Summers will be very pleasant, if not somewhat stormy from the great plains that storms build up through. But you will definitely learn to love Lake Michigan... it's a big deal around these parts. Winters are long and hard... very, very brutally cold. Not as much snow as you might think (proportionately speaking, that is,) but it gets goddamn cold. If you're into hunting, snowmobiling, even skiing and snowboarding, you're set. If you detest snow and cold, well... look elsewhere, haha. Springs are pretty sporadic, but falls are extremely awesome.
2.) I think you're a Packers fan, yeah? Good. I remember one Christmas we were over there the church we were supposed to go to for [i]Christmas Eve[/i] mass got post-poned because of a Green Bay playoff game... lol. So much win. It's their world out there, though. I'm a die-hard Cheesehead, and those mo fos put me to shame.
3.) If you like motorcycles it's a great state to live in and VERY friendly for bikes.
4.) There's plenty to do in Green Bay. It may not be a marquee city in the US but it's big enough that you can stay busy. Unless you're really living the rural life, it won't be as big of a deal as you may think. A lot of people farm and stuff as a living, but that's because there's a lot of pasture land and stuff. If you're in or close to the city, you won't probably won't notice a big dropoff unless you're actually from one of Texas' big cities.
Just a few random thoughts.