Holy cow! I would never get anything done around the place! I am glad you have that kind of time, maybe when I am retired.
1.) Working 10 hours a day, I need to rely on a large waterer to supply them with enough water for a couple of days. I check it every day so they are never out. If they happen to run out, it is never for more than 10 hours.
3.) Handling 16 chickens - 3 times a day just ain't gonna happen at our place. I scan the flock when I open/close the pop door and when I feed them. Any that look off will get handling as needed.
3.) The dogs have a sheep tank to take a dip in, but the chickens can play in the puddles if they get hot - but they actually seem to prefer to lay in the shade under the roof in their coop, in one of the multitude of holes they have dug in their run, or lined up along the concrete of the barn foundation. When they are free-ranging, they are content scratching in the deep shade of the hedgerow on the warmest days.
4.) My chickens have a trough feeder that I fill twice a day. They are going to get a bulk feeder as soon as I find the time to finish it. Too much food is wasted in the trough feeder when they scratch their bedding into it.
I suggest you check the date on the food bags before you buy it. Too many times I have checked the dates at the store and the feed was getting pretty Old. I can usually tell by the smell when it is over a month old.
Edited to clarify: by YOU, I simply mean anyone with chickens and reading the thread, not any one specific person. It is a general You'all.