I am certainly no violence expert, as I do not have a violent atom in my being. That said, I agree with the wise posters above that this project would likely be open-ended, which I am skeptical he would accept, based on past behavior.

The best predictor of the future is the past.

Un-coupling is never easy. It is frightening, made more so for you by the fact that you have been with this person since you were essentially a child. That is tough stuff.

I wish you all the best. Make those lists. See what you come up with. Maybe that will give you some guidance.