I keep Japanese quail (Coturnix Coturnix) Ross, I assume these are the ones you're thinking about for eggs/meat?
From a dual purpose point of view I don't think any other type of quail comes close to them.
I keep them mostly for eggs but I eat a few of the extra males and sell a few adults, point of lay stock.
I'll do you a short summary of what I do, if you need anymore info just ask.

I breed my own, they generally don't sit on their own eggs so I use an incubator. (the very occasional one will sit on eggs successfully)
incubation period is 17/18 days, I get better hatch rates not using any water in the incubator at all.
The splayed leg/curled toe problem commonly seen in day old chicks is due to inbreeding, incorrect incubation settings and a lesser extent the breeders diet.
Many of the flocks/birds you will come across are inbred to some extent, this will impact on the hatchability and leg problems quite severely.
Best to keep separate strains then plan and record the breeding rather then just keep them all as one flock.
Mine are kept in a large shed with natural lighting although I supplement that with artificial lighting when needed.
I rear mine on standard chick starter crumbs and feed them a standard layers mash, they are quoted to need a higher protein diet but never had any problems using the chicken feed and they lay well on it.
Quail chicks are tiny and will drown/get wet, cold and die in very shallow water, I put glass marbles in a standard drinker so they can't really get wet even if they stand in it, they can get their beak to the water but nothing else.
If they are reared on 16 hours light per day they will start laying at 53/54 days of age and within a few weeks will be laying almost an egg per hen per day.
my youngest batch of 10 hens have just laid 682 eggs in the last 10 weeks, if they had all laid an egg a day i'd have had a maximum of 700 so they lay very well!
They lay whenever and wherever they like, they don't make a nest like other birds, they just lay their egg and carry on as if nothing had happened so you need to be aware of keeping them in pens with inaccessible areas.
They will lay through the day and night, they don't just lay in the morning like ducks.
I keep mine in 3 tiered wooden structures either 4' x 2' (breeding pens) or 6' x 2' (laying)
For breeding I keep them at a ratio of 1 male to 5 females, in a 4' x 2' pen I keep 2 males and 10 females.
Thats quite tight for space but I find if you give them more room they will set up territories (males and females) and this is when the fighting can start to get vicious, they do like to peck each others eyes!
Keeping them quite tightly stocked seems to prevent the territories forming.
Keeping a higher ratio of males will also mean a lot of fighting and they will kill each other eventually.
Too many males to females will also mean the hens are over mated and can suffer head injuries.
If I use a breeding group of only 1 male and 5 females I would split these pens down into 2' x 2'
For the laying pens (6' x 2') I normally keep around 20 females and a couple of males per pen.
I keep mine on sawdust, I find its best for quail, they love it and will dustbath in it constantly

I change mine every week whether it needs it or not, clean litter = clean eggs.
quail kept on damp litter are prone to collecting hard balls of litter around their toes which will be a real pain to remove.
They will also dustbath in their feed if given the chance and scatter it far and wide.
A feeder that allows their heads in but not their feet or body is best to prevent them wasting feed.
this type of idea works fine.


Try and find a mash or a meal feed with no whole grains in it, they will leave a lot of the whole wheat etc
Water via a standard drinker or nipple is fine.
I usually keep mine laying for a year then select some of them for breeding, the others will lay pretty well for a few years but not as many eggs, however the eggs will be large.
If you're eating the excess males then 8-10 weeks is the optimum time for them, any longer than that and they are just eating feed without gaining weight.
If you cull the males out when young and only take feed costs into account then you should be able to produce eggs for around 2p-3p each.
Once you start to allow for incubators/heat lamps etc for a month at a time etc it cost a bit more

I sell males at £3 each and point of lay hens at £5 each so even selling just two of them will easily pay for a bag of feed.