My 90 year old father wants an Apple Watch but does not have an iPhone with cell service. He has an iPhone 5 that he just uses like an iPod. He is a big Apple fan and just wants an Apple Watch. He is deaf and does not use or want a telephone. Rarely leaves the house so he will always have WiFi or be in bluetooth range. He will want to use it for heart rate, time, iMessages, weather app and calendar. Will this setup work ?