What I used to do as what I believe if you are lpaying with brakes, if you not sure what you're doing, leave it to the proffesionals!
I used to take my calipers to my local "Better Brakes" and let them rebuild them. WHen you get them back, the are spotless, look great and ready to bolt on and you know all the correct parts are in it. Cost is a bit more but for the time and effort, its worth it.