About green-stuff pads, if you live in a flat, or rolling hills, area, they will work fine. They have good initial bite and modulate fairly well. But, downhill on long, twisty, mountain passes, the pads will overheat and fade. It’s not the rotors as they do not even slightly discolour. Mintex 1144 is a better pad material choice if fast mountain driving figures in your future.
As to your question, the anti-squeal coatings and inserts can be helpful in reducing unwanted noise.