I much prefer a dirt floor over one that must be constantly cleaned. Phooey on that! I do deep litter, when it gets messy, toss in more leaves, hay, or pine shavings. They enjoy scratching through it (leaves preferred) and it makes compost right there in the coop. I did it out 2-3 times a year and spread more leaves. LOW MAINTENANCE!
Have your nephew build you a walk in coop, with 4x4 posts set in the ground and a covered run attached. Then you have the option to open up the coop and let them out in the yard or just let them range around in the coop and run.
This was my coop in Livingston. It was 8x7 and I kept 6 hens. Later I added on a 12'x8' run and got more chickens. That gave them plenty of room and I also let them out in the yard.
Note all the ventilation. In winter, I stapled plastic over the largest spaces, but left the bottom open.
Not saying that you have to copy this, it's just to give you an idea of a walk in coop, dirt floor that the chickens liked. I like
@canesisters idea of a wired off walk in area for you with space for a trash can with lid for feed.
View attachment 28535
View attachment 28536
I used a star riser and made them steps to their roost. LOL
View attachment 28537
View attachment 28538
View attachment 28539
See the wire laying on the ground? The whole coop was skirted with wire to prevent dig ins. Sometimes I had the run 2 feet deep in leaves.