This is outstanding Tau Phi. I will post in the files section and think about ways to publicize this. We have to keep in mind the compromises Gassendi made on religion and death and perhaps other things, but even with that I think his treatment of happiness, virtue, and determinism are extremely helpful. His broad overview of these issues probably places this in the category of DeWitt or Emily Austin or even Diogenes Laertius as a broad overview of important topics, with comparison to other philosophers.
The formatting looks excellent as well. Do you mind sharing what intermediate programs you used to produce the final PDF? did you use some kind of Latex generation or something else that is accessible to others. I can imagine that others here might tackle similar projects in the future and it would be good to know if you've got a particularly useful methodology that others can duplicate.