Your requirements there are a bit exagerated...........
Having had a few of these, a 4x4x8 cage and a smaller 10-15 gallon water bowl is plenty. I'm sure it would be nice to have an inclosure the size of most living rooms, but it's not necessary for a healthy Salv. They will get plenty of leg room when you take them out for exercise........and if you don't have near daily interaction with them and get them out they turn into 80lb buzzsaws so there wouldn't be any sense in having it then anyways.