different excercises, change 2-3 out of 4.
Set/rep schemes...4x8, 10x3, 3x12, 8x4, 6x5, 5x7
You could do 10x3 for A's and then 3x12 for the B's. That would be an interesting routine might try that myself.
btw bumping it up to 3 workouts a week would be a good move you could decrease the volume that i gave above.
