My meaties prefer to sleep by their feed and water. Right now we only have 6 birds. 12sq feet of coop plus 16 sq feet of run. Run is not a tractor where I can move it in the field. That space is for my layers. Coop and run gets additional inch or two of wood shaving every day and depending on how bad it looks, it gets cleaned out every 3 to 4 days. We toss in chunks of sod into the run but they don't seem to have much interest.
And yes they are filthy compared to my layers and seem bit more dumb with one track mind. EAT, DRINK, POOP and SLEEP.
After the cone, they get a good hose down with bit of soap, rinse then into "hot" water for plucking...If the poop on skin is a turn off, you should stop eating crispy fried chicken with skin on. If you think factory farm chicken is cleaner, then you are for a rude awakening.
We don't grow too many meaties since we don't sell them. It's for personal consumption only. Selling is such a hassle. If anything, I'll trade something I want from my neighbor for something they want from us. I don't want to call it barter either. It's more of hey **** I got some extra want some? Few days later my neighbor comes over Hey ****, I've got some extra... want some? Heck sure... So its not even a barter.
Just my two cents.
Do what you want. 4 sq feet is more than plenty for a meaties. If you want to keep their bellys cleaner, add wood shaving into their run/coop or wherever every two to three hours.