So, I get to choose my own super powers? First thing first, I would like to infest all of my points on bio-engineering, then I will try to make as many innovative inventions as I could (the world can always use more stronger and sweeter fruits), patent them all under my name, and then get a huge load cash from selling them. After I got enough money, I will buy a secluded medical facility in a third world country. In there I will get to create a new species of insects that will always evolve to better suits themselves in any kind environment. They will strive to consume everything they can get their chitinous limbs on, and they will grow larger, stronger, and smarter in every generation. When I managed to create the most stable strain, I will release them all to various ruins of civilizations around the planet. In a few decades they will grow much larger than ever. In a few centuries, there can be only one dominant species on the planet, and it's not mammal.