Hi Rita, good to hear from you. Will these be Chinese or Japanese (Coturnix) quails? I'm not sure what you mean by Mexicans, but presumably Coturnix as you're looking forward to eggs.
Where is the quail pen to be situated? If out of doors, you will have to think about how to keep them dry and draughtproof, as although adults can stand cold down to a degree or so of freezing, they cannot manage damp conditions from foggy weather or drizzly rain. They'll need a roof over the pen, and mine also liked a clear plastic cover over the sides and back, to protect them from wind and sideways rain. With winter coming on, this isn't actually the best time of year to be hatching, as they won't be fully grown until they're a couple of months old - I expect you have plans in place for a heated chick brooder indoors somewhere, but then it may be difficult to acclimatise them to much lower temperatures and different humidity outside in a pen. When I kept quails I brought them in to cages in a summer house between October and March, with small LED lights to keep them laying, because they won't lay unless they have 14+ hours of light. I also installed an Ecoglow infra red brooder as well, which they used a lot to snuggle under when it was chilly, kept the cage dry as well as a little bit warmer. It's much easier to get them used to living outdoors if you hatch in Spring, of course, as the sun is so good for them, and with only 6-8 weeks between hatch and first eggs, if you hatch in Spring the growing hours of daylight get them off to a good start for laying well. From an Autumn hatch you'll need lights if you want them to lay before Spring.
The run you plan is a good size, though, I used to allow 1-2 sq. ft of run space per quail, and they are such busy little birds that they don't seem to need entertainment, but they do like lots of places to hide and shelter under, such as small bushes if the run is fixed in one place, or I used those small plastic dome-shaped shelters you can buy for Guinea pigs, they liked going in those and often laid in them. Plus a nice big deep bowl for a dustbath of course.
Do let us know how you get on - they're such pretty, lively little birds. We used to have several wuail keepers on here, so it's great to hear about your project.