you`ve just got to remember quail have a very short life span and do tend too fight too the death at random!
i always incubate replacments constantly! or you can all of a sudden have none left

i personaly think they are very good for egg and meat production because they grow and reproduce so quickly you get a very quick turnaround in 6 weeks they can go from egg to laying an egg

with a lot less feed than a chicken,i`m not puting chickens down as i keep a lot of them (and most are pets and quite useless) but with limited room i`d say quail are one of your better options.