There are some things which you should not answer unless you have experienced it yourself. Having kids is one of them.
All your activity sounds good on paper but real life does not work like that. Kids are smart, they can see you are on your smart device, they can see others are on their phones/ipads when they go outside. You dont want your kid to be a social outcast.
Sometimes when you want to do your chores or want some quiet time for yourself the best solution is to give your kids an ipad so that they remain busy.