If you have to replace the rotors you'll need to pull the bracket off the knuckle too.
Oh, and get some silicone caliper slide pin lube to lube the slide pins.
Now would be a good time to pull the rear wheels and make sure the lower caliper slide pins are still sliding. The rubber boot gets torn and they like to freeze in the bracket. Make sure they move, make sure the boot is intact, and that there is plenty of lube.