You changed all the pads and rotors, there is not much you can do more, unless the pistons are not equally pressing the brake pad to the rotor but that is not common and I never heard about it. The ticking sound, well as it only appeared after the brake job, I assume that one of the pads is slightly touching the rotor while in motion as it is free in the brake claw when piston is not pressurized. I do not see a major issue here and suggest to observe it for a while.