Hi Nicole-
Here's a rotation I came up with if you want to work each upper body muscle group twice in the week:
Day 1: Step & Intervals cardio and chest work;
Power Circuit back, ab work and
Day 2: Kickbox cardio and biceps;
10/10/10 triceps and stretch
Day 3: All Step in it's entirety
Day 4: Power Circuit cardio and back;
S&I chest and stretch
Day 5: 10/10/10 cardio and triceps;
Kickbox biceps, abs and stretch
Day 6: Leaner Legs;
All Step shoulders, abs and stretch