Don't know about the hunting but I did see a few dead deer along I-90 in the Austin MN area when I used to go to Sioux Falls SD back in 2002 -2003.

As far as the terrain goes if you're used to a lot of woods and hills you will probably be disappointed. There is 1 HILL between Austin MN and Sioux Falls SD and it's at Jackson MN. There is a nice rest area there. It's pretty much flat as a pancake the rest of the way.

You are going out there for a few days before you decide to take the job to see if it's somewhere you'd want to live arern't you?