If you want to climb the ladder, or even better, build your own ladder. Do you think the jobs you mentioned will provide adequate knowledge? Experience? Connections? Sometimes life is not just about finding the highest pay jobs. It's about building your own job. When I was in secondary I also made a decent amount of cash just by selling cases and accessories online. I thought of doing it full time before I entered college. But I don't think in the long term it can bring me to anywhere so i stopped and venture into other things.