I didnt know about no text language. Oppps! Sorry.
With the barn, what Would you be doing with horses? Breeding, showing, race horses, cart horses? If you are breeding you want to make sure you have the utilities for it and room for the mare and foal to be safe. You may want training facilities if your going to be showing and racing. Driving, you may want places to keep the carts harnesses etc. If it's just a back yard barn you obviously don't need the fancy stuff. You also want to have the barn VERY horse safe. Hope this helps you.
ConfIrmation is the process of supporting a statement by evidence.
You are wanting confOrmation, which is the shape or proportionate dimensions, especially of an animal.
So basically, conformation is looking at how the horse is put together. There are good and bad qualities that people look for when they go to purchase (or possibly lease) a horse.
The question about the ideal stable is going to be greatly varied. Not everyone does the same thing, or has the same set up. If you were more specific, we might have a better chance at give you a great answer, compared to a poor answer.
And just for example, I like to use peat moss for bedding, which is not that common. A lot of other people bed with shavings or straw. Heck, some people even bed with paper shredding!