I want to expand on what HM posted. Everything in life is about timing and unfortunately you missed your timing on a grandiose speech you've been researching. What you are planning may have worked in the beginning but right now I am afraid it will completely back fire and end really badly for you. You can't go over for apps and drinks and apartment tours one day and then attempt a scripted ultimatum the next day. There is no way she will take you serious.
Again, let's start with tough love. Trigger goes. No more happy hours and pool parties. Actions that you are done with the bs. Then when your ready you file. No warning you just do it. You can always pull it in the future if you it comes to it.
