Diet is as important to this routine as performing each exercise with as much intensity as possible. For an individual to see results from this routine that they are doing, it is necessary to eat a clean and healthy diet to enhance results. With a cutting routine it is necessary to take twice the amount of protein in as you are taking in carbohydrates. It is also important to have one carb loading day throughout the week to confuse the body, thus stimulating metabolism and fat loss. Cardio can be performed in the beginning of the workout (except on days that you are doing lower body) but is more preferable to do your cardio at the end of your workouts.
On days you aren't working out you can also perform about 45 to 60 minutes worth of cardio to continue the fat-burning process and keep your body's metabolism stimulated.
*** Note : Make sure that you log and track your diet to maintain proper calorie, carbohydrate and protein intake, this will help attain desired results.
By performing your cardio in the beginning of the routine and early in the morning (before eating) your body will use any stored fat as fuel rather than any carbs/food that you eat throughout the day. If cardio becomes to easy at the pace you are going, increase the speed or incline of the treadmill. You can also perform HIIT (High Intensity Interval Training) which you perform about 2 - 3 minutes of cardio at high interval/speed and then 1 - 2 minutes of steady walking/slow interval speeds. This HIIT cardio style enhances calorie and fat burning within the body.