This was the first thread I read....
So, these are my thoughts:
You only talked about the weather-conditions this dog will have to deal with.
My first thought was "What will be the life, this dog has to deal with?"
He can´t come to the home of the new owner, because of the 6 other dogs. He will not have a companion, he will not have a family.
Just a "job" in the heat......
For one of my dogs this would be far to little for a happy life.
Just my 2 cents.