I have laying hens and haven't raised meat birds, but my neighbor does! You can absolutely do a deep litter method, but they're gonna make way more
poop than you can imagine. I have 13 birds in a mobile 4x10 coop that has an an enclosed "pen" about 3x4 where the roosting bars and feed are, and I put about 6 inches of bedding in it and I have to change it about every 3 weeks.
You have plenty of
land to move about a mobile coop if you want to consider that route. My neighbor fashioned a simple 12x12 frame out of pvc pipe. it's about 18 inches tall at the sides and has a ridge down the center 24 inches tall, just like a roof on a house. he drapes a tarp over it, tied down along the perimeter, acting as the roof so the birds stay dry. all four sides of his coop are wrapped in metal hardware cloth (think window screen but the holes are 1/2 inch square) so raccoons and other undesirable critters don't get free meals. It was affordable to build, lightweight and therefore easy to drag across the grass, and can easily be anchored to the ground in the event of high winds and storms. He raises about 75 birds in that size coop and moves it every day.
If you can move them about you will have happier, healthier birds that can forage on grasses and bugs, helping offset the feed costs and yielding tastier, more nutrient dense meat. You also won't need to purchase or find suitable bedding on a regular basis if they get fresh
lawn every day (or two in your case with less birds). They're still gonna need a high protein broiler feed, and lots of it.
Btw, I buy birds from my neighbor after they've been processes and I pay about $4/lb. he feeds them certified organic feed. His chickens I buy are 5 to 6 lbs, dressed. Yes, I buy $24 chickens, but I know what I'm getting, and it's worth it to me. You could
sell a few, helping to offset feed costs. Just a thought