The main thing Mike you will be getting it of a freind of close family and in my book that’s as good as guarantee you will get. Regardless whether they live in a £100,000 house or a million pound house.
As I said yesterday, I think in the long for your own peace of mind you have made the right decision, along with the fact you have family around the corner should you ever have a “bad user moment”
Will your niece set it up for you and link it to your apple account etc?