You Div want to rotate them, usually after an oil change. However since you got new tires they have more thread than your older tires so they should be left up front till they wear down a bit. Turning makes more wear on your tires. While on the rear wears at a lesser rate.

That's a great price on tires lol. I hit a pothole last week rushing to my moms. One tire was 165. F m l lol.