Broody hen with chicks about to hatch

[DobieLover]

some chick water/food feeders from when we raised these hens so I can put those in the nesting box

I would not do that. They do not need to be in that nesting box. She will take the chicks out and take them to the feeders and the water. Put them in the back side of the coop so that she has to walk across the coop to get to them.
Your biggest problem is going to be when she wants to take them out of that elevated coop. Chicks always have a difficult time navigating ramps and sometimes the mother just doesn't realize they're not following her up. Or some will go up and the other stay down and now she's got chicks all over the place and can't manage it. You're going to have to help her out with that part.
Your coop really isn't that big for the number of birds you're going to have. You better have a plan for the cockerels because their father won't tolerate them for that long of the flock.

 

[ChickenNewbie2020]

Can you please post pictures from inside the coop?
Yes, I would just leave her there. One other thing that you need to do is provide a chick safe waterer. I use one of these.View attachment 2760723
You can hang that just outside the box where she can reach it too. Is give it to her ASAP. She will train the chicks to it. She will take them to the feeder. You can put a second feeder at the other side of the coop so she doesn't have to leave the coop until she's ready.

Where did you get that water feeder from??

 

[DobieLover]

Where did you get that water feeder from??

I made it.
I got a sports bottle with a flip top drinker and built-in handle from a thrift store for $0.75.
I bought a pack of vertical chicken nipples for $5.00.
Drill a hole in the bottom with the correct size drill bit, thread a nipple into the hole, fill the bottle with water and make sure it's not leaking, open the drinker port so it doesn't pull vacuum and hang it up.