Yes, definitely. It will allow you the recovery time for your body to rebuild. I think it would work best without excessive cardio (which will burn off the calories needed to build the muscle).
I also recommend doing the Gs series this way:
Day 1: Chest/triceps (or back/shoulders/biceps)
Day 3: Legs
Day 5: Back/shoulders/biceps (or chest/triceps)
which spaces out the upper body workouts, and allows you to lift heavier with upper body while at the same time being kind to the shoulders.
I'd recommend Gym styles this way (with perhaps the lower body done 2x,on days 3 and 6, since lower body exercises like squats and lunges use large muscle groups, and this promotes a production of more growth hormone as well as a boost to the metabolism).