Here are my thoughts "by the numbers"

#1: "Stock up"; now is the time. If there is a domestic outbreak, these things will disappear.

#2: Curtail travel, especially international. I would do this now also. I mentioned in this tread earlier my concerns/experiences during my mid-August trip to/from Eastern Europe. International Air Terminals are mixing bowls for the world's population. You usually can't control who is standing or sitting next to you (and coughing). Don't go unless you have to.

#3: Public Gatherings: Right now, I think a judgment call based on where you live. Big cities, maybe not; small rural town, much less concern.

#4: Plan to Home School; good idea to do the planning now. When to start the home schooling will need to be driven by local developments. School size and location (e.g. big city school vs. small town school) would play a big part.

And I would also suggest implementing frequent hand washing/sanitizing and, if possible, a no handshaking policy.