Hey
Lennon.ch
I have no experience with incubators either and my hatches have all been under a broody hen. Having bantams with a tendency to go broody, I usually have one or two available when needed
Your plans to have the broody and her little ones separated is how I raise my chicks. My flock dynamics is such that not keeping her separate is a recipe for disaster with squabbles over nest boxes and the risk of injured chicks when they hatch. Also, keeping her separate allows her to brood peacefully.
Topic of the Week - Broody hens
If the rest of the flock can still see her and the chicks, integration should be easier when the time comes. You might find this discussion of interest:
Topic of the Week - Integrating Chicks into an Adult Flock
The broody set up you have planned sounds good. Yep, as long as they have somewhere warm and sheltered, food, water and somewhere for mumma hen to teach them how to forage etc, they should be fine.
Chickens raise broods ‘on the ground’ naturally so as long as she has some nesting material, it should be fine.
This is a set up I have used in the past:
View attachment 1224960
Fertilised eggs can be stored on the bench for up to 10 days before being popped under a broody but the closer the age is to 10 days, the more chance of them not developing. So, if you can, fertile eggs around the 1-5 day mark would be better and hopefully give you a higher hatch rate.
Sadly, as mentioned, there is no guarantee that a hen will go broody.
Best wishes and good luck!
Edited to Add: Sorry for the duplication of advice others posted while I was typing