If you diving is that important to you, then stick to commercial, however be warned commercial diving is anything but glamorous. Often tedious with moments of disgust and terror mixed in. Pay a lot of attention to differential pressure hazards. If you are looking for a trade that might compliment your diving skills and have a chance of diving in the military then go Combat Engineer. Also take a keen interests in ROV as when your body begins to complain from the diving, you can move into that field. Also note that commercial diving is hard on your bone structure.