Sorry just commenting as I read.
Nothing wrong with your dog living outside IMO. Do whatever is best for you and your dog.
My guys live inside/outside. So during the day they go outside usually, and come in at dinner for the evening. But sometimes they are in and out all day it all depends. This isnt because I think its "best" for them though...its purely because I want them inside with me.
However, Barney lived outside for the first half of his life. With the odd sneak inside the house in the veenings. I rent, I cant afford to piss a landlord off and ruin it for other dog owners. Living outside didn't hurt him at all. So just do what is best for you!