Well, I have 5 in my house right now.
Champ free roams, always.
Annie and Zailey WERE able to stay in the garage while I was out, but then Zailey started to pee in the corner out there way too often, so that right got revoked, and she got demoted to crate status.
Annie then started to cry, the most pathetic cry, in the garage by herself, and seems much happier crated, so I crate those two girls together in a 54" crate.
Timber and Braxton each have their own crate.
From what I hear, Mousse has separation anxiety, and will need to be crated as well.
Now, let me also say that my dogs are very well trained to a doggy door, (except for the puppies) BUT... I haven't got my fence up in my yard, let alone my giant doggy door installed yet in my house, and that's why they're not all out. However, I'm pretty sure that even when it is up, I'll only leave two or three to roam, I feel like they get in too much trouble as a pack, (particularly the annie & zailey combo!) but a couple at a time is better for them, AND my $4000 couch set. (my totally irrational splurge upon moving into my house)