I find using the same 15 degree perception, CB edge to OB A, CB center to OB edge, on all 5 shots, very difficult.
My rough line up CB edge to OB A is a 3/4 ball cut. My rough line up for CB center to OB edge is a 1/2 ball cut. Applying a 15 deg perception ETA/CTE kind of works for shots that fall close in the range of 3/4 to 1/2 ball cuts.
Cuts thinner than that, I cannot see the 15 deg perception ETA/CTE and make the ball. If I position myself to see that perception, the shots end up under cut.
Try setting up the shots with a ghost ball in place. Ghost ball should be placed to give a slight overcut. Then, reverse engineer the shot. Get down lined up to the ghost ball, then stand up and find your visuals. (allow for the reverse pivot also)