I'm new to rving. Southeastern Michigan

As retired air force you do know that they are chocks, not chalks right? I would say you need something under the stabilizers be it wood or the plastic ones to keep them from sinking into the ground with all the movement in the trailer when your in it and when it rains and the ground gets soft. Yes, use a pressure regulator on your water inlet, and when you leave your campsite to go site seeing shut off the water at the campground spigot, and get a surge protector for the electric hook up. Also have a potable water hose and use it only for your city water hook up and have a separate utility hose for all other uses. You will have a blast in the RV lifestyle. Have fun and be safe pulling your new "home".