I've heard that setting a date does not always work well for people, as it can lead to anxiety in anticipation and on the day.
It's up to you when you want to do it, that's a deeply personal decision that only you can know the answer to.
I would not advise getting a partner unless you
really trust the person and know for certain that you are both 100% committed to CTBing.
Idk about limiting SI, but I guess I'd say choose the least intimidating method and try to prepare yourself, psychologically.
What kinds of guns and drugs, though?