My workout routine

I'm currently trying out the "Beginner Dumbbell Week 1" workout, on page 368 of the Men's Health Home Workout Bible. The routine is the following:

MUSCLES	EXERCISE	PAGE
Lower abs	Reverse crunch	63
Upper abs	Crunch	66
Lower back	Prone Superman	73
Lower body	Sumo squat	152
Chest, front shoulders, triceps	Bench press	122
Lower body	Reverse lunge	158
Upper back	Pullover	131
Shoulders, triceps	Shoulder press	134
Upper back, biceps	Bent-over row	129
Shoulders, traps	Upright row	135
Shoulders	Side-lying external rotation	136
Triceps	Lying triceps extension	139
Biceps	Seated concentration curl	146

I'm skipping the last exercise, the Seated calf raise, and I'm trying out circuit training, so I only do 1 set of each exercise and then move on to the next one.