You could (A) work them into the rotation as a"hamstring" exercise, or (B) I personally would drop the bicep exercise and change it to a glute specific exercise. With 2 back exercises the biceps would get enough work, so it would now be
Workout A: Pull Workout
•Hamstring exercise
•Lats/back-width exercise
•Glutes exercise
•Rhomboids/rear delt exercise,