Un limit

The first thing you see standing in your way is the limitations on your body, the nanite injection has left you stronger smarter and faster but you are still limited in several important ways. You happily leave the hospital leaking nanites into each and every person you come into contact with and every person they come into contact with, fixing them but less than you, making them healthy but not superhuman, leaving spies and solders in their body for you to call upon.

That small act has simultaneously made you a hero in the eyes of many and solved many of your limitations as you hijack some of their mental power to use for yourself and quietly infect others as your pawns encounter new people. You also learn much about every aspect of the human condition as your mind spreads through them and when you get home you set a seed to grow you a duplicate body, identical to your own genetically only female.

You upgrade both bodies to have powerful pheromones. You gently nudge some banks into giving you unlimited credit you won't ever have to pay back and go about your projects while your clone cooks.