I believe that truck came from factory with ceramic brakes, so you are headed in the right direction.
Noise can come from many different sources. Noise is vibration. You just have to find out what is vibrating.
What brand are your pads? Do they have shims or noise dampeners on the back of them? Is that hardware keeping the pads secure and is it lubed? Did you machine or replace your rotors?
Some cheap ceramic pads have a very small amount of ceramic material in them and are mostly semi-metalic and will make noise. Try Raybestos ceramic pads from CarQuest, they are a full ceramic and should have a lot less noise.