At TSC, it'll be called "Flock Raiser". You'll have to set out a calcium source on the side for your laying birds. It doesn't need to be complicated, a little container with oyster shells and/or crushed egg shells will do.
The chicks should have fairly uniform light yellowy down all over. You should see white with black feathers as their wings start growing.
At one week, there wouldn't be much comb development.
The potential predators around here are raccoons, foxes, and raptors. There is a bit of secondary growth woods across the one-lane road. The run is chain link fence with a wire mesh skirt.
Rodents and raccoons are the only two creatures I can think of that would be interested in chicken...
I keep the feeder out in the covered run. It's a typical store-bought, galvanized steel feeder. The birds do spill some on the ground but they'll still eat it. No predator/pest issues.
None of your birds look male right now. (Yay!) I wouldn't worry about the EE either. I have one and she's super friendly and wants to be with people all the time.
So much variety today mostly because it was time for flock integration (which went decently, yay). Oats, strawberries, grass, carrot and apple peels, and a hard boiled egg.
This is one design of cup waterers:
Water is released when the yellow tab is pushed. I've been wanting to upgrade to these since they seem like a good compromise between open container watering and nipple waterers.