I know nothing about the particular pads you bought. Sorry.

I do preach incessantly about the importance of choosing front and rear braking components that match each other. Mis-matched brakes make for longer stopping distances, varying handling at different brake temperatures, and one set of brakes working harder (and heating up more) on downhill grades. Sven worked hard to balance that car to make it handle well; don't mess it up!

On the other hand, I am pretty lax about turning rotors. I am willing to wait a week or two for the new pads to seat properly in exchange for saving myself a chore and $20.

Look at the size and shape of the footprint on the old and new pads. If the new pads have a bigger footprint and won't fit within the groove cut by the old pads, then you will need to turn the rotors.