That is one handsome dog! I hope it goes well for you. Be sure to post questions and even be prepared to shoot and post video if you have any concerns over how the group is interacting. We struggled early on with our two existing dogs and their interaction with the pit we brought in off the street a few months ago, but with a few tips and a lot of support, we got through it in time. You already have a leg up since he's coming from a foster already and have had time to think it all through in advance.