Building my story

So as I was reading through John Truby's The Anatomy of Story and he pretty much makes story telling a lot easier. He has some main steps and steps in between to help you out on your journey of mastering your story.

I seem to having an issue with my premise; it changed quite a few times from the discussion module. I am trying to get the needed information in it, without over doing it. In my opinion this was the hardest part.

Truby has some writing exercises in the back of his chapters that I did that helped me.

The start of exercise one is to make a premise list. Here's my premise list.

-       With new laws and security measures, a girl moves back to her homeland to have her life completely turned around.

-       Unbeknownst to J, the chip injected inside of her as a new law is not the kind of chip she thought it was.

-       Belonging to a “hero” that was part of a law enforcement agency, the chip injected in J causes life changing problems for a lot of people.

-       A company makes a slip up when it injects a chip into J that previously belonged to a “hero”.

-       An unknown chip injected into J, causes a company to have a civil war amongst themselves and her, only for J to become a “familiar” hero.

-       A carefree girl is injected a life-altering chip of an old hero that leads her to discover the truth about the “Purple Lights”. ?

I am not really sure which one to go with, but I think I'm leaning towards these two:
      - An unknown chip injected into J, causes a company to have a civil war amongst themselves and  her, only for J to become a “familiar” hero.

-       A carefree girl is injected a life-altering chip of an old hero that leads her to discover the truth about the “Purple Lights”. 

I want to call the story Purple Lights so I think the last one makes sense. I'm open for some help.