We made it! The girls were well behaved, even though each dog had 1-2 human guards at all times. I think only one growl escaped and they didn't play too rough so the house is intact.
Definately going to have to keep this going, we are all sure they will be the best of buds soon. They even managed to allow us a holiday photo shot of them in the same room. Aren't they just the cutiest!!