I think that would work well, but IMO that many chicks would outgrow it in a couple of weeks. If I used it, I would use it for a 3 or so weeks until the chicks were over crowding, then move them to a grow out coop during the day for a week. By then they should be getting close to fully feathered...
Depends on this size of the brooder I guess and if you are joining to an existing flock.
Definitely need to be feathered out before they come off heat, but it also depends on local weather too. Here it's quite warm, so the heat was removed after 3 weeks during the day, then only another week...
We have had a bit of over kill on the latest hatch, ended up with 27 chicks, so we had to expand on our double story brooder.
I call it the Frankenbrooder. 1800mm x 800mm x 500mm deep, also know as an old cupboard and vegie garden screen.
Going to give it a final clean and then furnish...
That (^^) is a very cool brooder. I have a similar design where I can remove the ramp part when they are small, but when they want that bit more space I put it back in. I don't have the mesh partition in place. Mine seemed to love jumping up to the lip and back down, some used the ramp. I would...
We have a members page with full details if anyone wants more.
https://www.backyardchickens.com/a/bens-hens-diy-two-story-brooder
Home made, painted by the kids with squirt bottles. Easy to clean inside.