1.) Dont waste your time doing cardio on an empty stomach or waste your time doing aerobic cardio, its vertually useless now, if your not a endurance athlete. Its called HIIT, HIIT is by far more effective then regular cardio when set up in proper intervals. Iam talking about 200x's more effective. Id suggest researching it.
2.) You want strength? Dont waste your time training to exhuastion. Stick with your major compound movements, Ie, Bench,squat, dead,hybrid lifts, olympic lifts.