Sorry in advance for the long post lol
So the guy backed out and I'm now planning an 8 by 8 coop (I may only make it 6 foot tall I have 100% decided but it will be 8 foot wide and 8 foot long (I'm only 5'5 so im worried of its 8 foot tall it will make the roof and any areas above my head hard to clean) for now the most chickens I'll have is 16. (my current 11 with the possibility of adding 4 more hens)
I free range atleast 5 days a week and honestly the only time their really up is if I'm not home for some reason, my mom says their not allowed out unless I'm home because they test their boundaries when I'm not around

but I work from home so that's why they only really stay up for maybe two days a week.
The only thing I'm concerned about is I do have Two Jersey giants, one rooster and one hen and the roo is already quite large and I know they say to account for more space per large bird.
Is an 8 by 8 still feasible with the option of expanding it to say a 10 by 10 or 12 by 12 if I decide to expand past 16 chickens? (I am using screws so it wouldn't be super hard to expand once I have the 8 by 8 built)
The run of course would be expanded as well if I do ever get more than 16.(probably would just fence in my entire half acre of back yard for them)
I had orginal purchased a 4 foot by 4 foot prefab coop so that's what the 5 orginal of my flock are coming from. Then I have Six new girls that will be added after their 30 days of quarantine is up. (About two and a half weeks left on it so I have a little while to build the coop)
I'm planning on a slanted roof to help prevent rain(I also will be doing a wooden roof for now but will replace it will a metal roof before summer is over) and planning to use Tree branches for roost instead of 2 by 4's mainly because I have a ton of solid tree branches around me that fell a few months ago after a bad storm, then I was going to use left over plywood and some pallets I have to build nest boxes.
I'm planning atleast four roost(I do have to make atleast one close to the ground due to my big roos potential mature size) but was planning to do the nest boxes in a row on the opposite side of the roost bars slightly elevated off the floor by maybe say 3 or so inches?
so far no one has had issues laying in the foam cooler set on the floor of the coops I turned into a temporary nest box because everyone told me my new hens would take a while to start laying again after the move and I've been getting an egg a day from all but two of them since the day after I brought them home


and one of my orginal flock finally started laying.
Anywayyyys lmao does this sound like a solid plan for a coop build? I'm am going to enlist the help of my grandfather who has building experience and offered to help if I bought all the supplies so that does change things a small amount lol.