Toyota Kluger rotors, I remeber being the same. So you can get them through a dealership.
Yes in theory the BIAS is affected.
The brake place next to my work has a bias machine you drive on and brake and it shows how much of the braking is done where,
As for G-Clamp dont knock,
At least 100 sets changed with it ang going strong. When did my pprenteship I didnt even know there was a special tool,
If you have any issues just realease the blled valve a 1/4 turn and press as you are doing it will take away the extra a pressure. PS dont open so much as you are getting bubble is the caliper make sure you are applying force with G-clap.
Over and out/