b) my overly precise (for most people, not here) speech patterns

The kind of ultra rational Bayesian lingustic patterns used around here would be considered obnoxiously intellectual and pretentious (and incomprehensible?) by most people. Practice mirroring the speech patterns of the people you are communicating with, and slip into rationalist talk when you need to win an argument about something important.

When I'm talking to street people, I say "man" a lot because it's something of a high honorific. Maybe in California I will need to start saying "dude", though man seems inherently more respectful.