Ok thank you. There isn't really a pecking order but this hen is not lowest on the totem pole so I wouldn't have reason to think there's be a problem in the future. Any thoughts on my questions?
Yes. I think your plan is good.
I wouldn't disturb her until the chicks hatch. That's how I do it here.
The moment the hen looks like she has finished hatching; she may leave some unhatched or even partially hatched egg, I move her and the chicks to a separated coop. I have a couple that are secure and permit the hen to go into a protected run until she feels confident enough to venture outside with her chicks. (see my coop page) and other articles.
The above is for junior hens or hens who have nested either away from their tribes coop or outside in the open.
With senior hens who sit in their tribes coop, I just leave them to it.
The first few days are important for the chicks and the quicker mum can get them on natural ground and start teaching them to scratch, what's good to eat etc, the healthier and more confident the chicks are I've found.
I provide feed and water as soon as the first chick hatches and I provide it at the nest site. Until that time I don't feed a sitting hen at her nest. She needs to get off her eggs at least once a day to eat, poop etc and most importantly, break the trance that broody hens use to sit.
Once she is mobile with the chicks and venturing into the run, I feed in the run and this helps keep the nest site clean.
I have ramps to my main coops and they do pose a problem for chicks. I'm there at roost time to ensure that mum gets all her chicks up the ramp. I find it takes about three days of assistance and supervision before I am confident that the chicks have got the hang of it.
Because I free range, I've found some mums will get some of the chicks into the coop and abandon those that can't follow. You need to watch out for mum if you find you have to help the chicks in. The chicks sometimes give a distress call and mum comes out of the copp in full battle order.
I hope this helps.