We've owned our Model S 60 for a little over a year now and still absolutely love it! The only issue we've had was a yellowing around the MCU (center screen) that was replaced quickly under warranty.
The fact that we can charge at night for a whopping 8 cents per kilowatt hour overnight is truly a game changer. Also, the fact you have a "full tank" every morning is wonderful. The Supercharger network is great too. We've only used it a couple of times but it's fast, efficient, and the stations are usually located in places with decent places to eat or shop (at least here in Socal). I'm sure you already have one, but incase you don't here is a referral code that will get you free Supercharging for the life of the car!
http://ts.la/michael863 .
I hope you and your family enjoy the new ride!
Michael