I have hand-reared numerous chickens. The hand-rearing is much more intensive than brooder-rearing and based on your assertions more likely to cause social issues later. I also do a lot of hen-rearing where hen is part of natural social group in a totally free-range setting allowing for a lot...
I will emphasize how to make it work rather focus on cons. This assumes cons are not overwhelming.
Feces representing two types, dander, and shed feathers will be your biggest concerns. Feces will be a daily issue. Most of time I would work on keeping birds over a material that is either...