Chest

Flat Barbell Bench Press : 2 x 6-8 reps
Low Incline Dumbbell Press : 2 x 6-8 reps
Dips : 2 x 6-8 reps

Shoulders, Triceps and Biceps

Shoulders

Military Press in Rack : 2 x 6-8 reps
Seated Dumbbell Press : 2 x 6-8 reps
Standing Lateral Raises : 2 x 10 reps

Triceps :

Narrow Grip bench Press : 2 x 6-8 reps
French Press : 2 x 6-8 reps

Biceps :

Barbell Curls : 2 x 6-8 reps
Hammer Curls : 1 x 6-8 reps


Would I be ok to throw in some supersets for the arms, and a few more sets on the bench? How does doing only 2 sets benefit the muscles?