I have the pads installed but hit a workstoppage until next month becuase of a drum brake backplate problem so the vehicle is disabled for brake seating testing right now. Hope to solve the problem with a mobile welding outfit so as not have to take the axle assembly apart and would only cost $100 and half an hour.
I have powerslots but would not add cross-drilling to that. It is only good for appearance and reducing inertial mass. Like track racing. The more materail you remove the less of a heat sink you have. I call it quits at slots for for street vehicles. Crossdrilled rotors are not practical for vehicles of these sizes. It just removes to much metal. If more cooling is needed it is more practical to invent some cooling ducts for this purpose.