I brooded indoors. By 5 weeks or so I'd had enough of the dust and the smell and we needed the bathtub they were brooding in, so they HAD to go. But I already had the coop in place so even though I kicked them out earlier than anticipated we were fine.
So I really suggest building the coop or at least having it mostly done, before the chicks arrive. Building or even installing one will always take longer than you anticipate, things come up or things go wrong, or you end up not being able to keep them in the brooder as long as you think (due to space, smell, anything), so I really think it's better to be set up and ready to go right at the start.
So I really suggest building the coop or at least having it mostly done, before the chicks arrive. Building or even installing one will always take longer than you anticipate, things come up or things go wrong, or you end up not being able to keep them in the brooder as long as you think (due to space, smell, anything), so I really think it's better to be set up and ready to go right at the start.