I got a braking 320mm disk and used the original yz caliper and master. Tried Tenere caliper with YZ master but brake was very snatchy not much feel. Got an xt660x four pot caliper but would need to space the disk out slightly to allow it to clear the spokes. might try it one day though.
The pad coverage on the disk is smaller than with xt caliper but for my use its great. I know it will wear faster but not going around the world so should be fine.