I am always experimenting with new programming. Recently, I have been working with kettlebells and have again begun to appreciate their usefulness. Kettlebell work adds transferable functionality to your program. KB back squats, you hold the weight in a racked position or on the back of one shoulder and you stabilize it with one or both hands. When you use heavy weights, they can stress the midline stability, and they will make any knee/hip faults visible – more so than with lightweight. Finding any imbalances, or stability issues will allow for you to them correction them.
The goal of this workout is not maximum recruitment, but for technical refinement under a load. In this workout, it will be difficult to get the reps in, but not so difficult that you begin to miss reps. I hope that you enjoy the workout!