Stay away from Walmarts (given), target is based in the twin cities. I used to live in Lakeville MN and commuted to Bloomington MN.
As a general rule stay away from the Mall of America area if you can. Along American Bvld. is a shady area. I used to work off of 82nd and 35W. I can't tell you how many drug deals I saw go down between there and MoA.
FWIW I Googled Flint Hills, its not a bad area. I don't remember it being bad when I was out there. The north side of the cities are usually where the feral humans live. I still lived south of where you are working.
The split in 35 into East and West and Highway 13 is a high congestion area. I remember around 630a to 730a that was a parking lot. At least it will feel like home for ya.