Welcome Glenn to the forum.
Congratulation on your Newmar and welcome to the Newmar family.
In this link
info on winterizing and winter travel and camping if you want to do that.
As long as you have your heater on the tanks will be fine and your plumbing most of it is in the insulated floor. We have camped and traveled in 1* temp's at Newmar and traveled to FL. from there.
Below in my signature you will see links to many others that can be used for your Newmar.
In QT's # 3
you will find a section pertaining just to you CS with threads by fellow owners for Mods and their upgrades they have added.
Enjoy your trip and enjoy the MH and have many safe travels ahead.