Some people can accomodate their large breeds better than others, inside the home. We have a pretty large house, but the rooms, aside from the living room, den and kitchen, are quite small. When I have to bring my dogs inside, that is where they "camp out".
I have a 113 lb injured male in my home right now until he gets better. The only problem I've had with him so far is that he won't stop taking my Pom's sleeping spots, and his toys, and it's kind of ticking the little king of everything off.
Equine, you've been given our response, and that's what you've asked for. So if you truly believe that the much more experienced members on this board, including long-time breeders, have no "sence" then please do not ask our advice either way.
You'll be told the same thing by anyone who truly knows and cares about dogs. Don't breed them.
We do every winter dog sport you can think of, including skijoring, which I'm newer at but it's still awesome fun. We live in the woods as well, and sometimes we have to clear small patches of land for wood that we use (woodstove, building, things like that) and the dogs are great at doing the draft work, but we also have horses to do that.