Great ideas. I do rescue too. We just had to have one of our rescue's put down this week.Is your dog a male? Don't just bring the new dog into the yard, introduce in a neutral "fun relaxed environment". Even if they get along be careful about "resources" when bringing them into your home.
Consider baby steps as in crates and dogs see each other but don't have the opportunity to fight. Hate to be paranoid here but I have integrated MANY aggressive breed dogs and it isn't something to take lightly. If they seem to get along (two males, or two females if they are both of the same gender) be EXTREMELY careful regarding food and treats for at least 3 weeks.
I am probably talking to the wall here but I am a dog lover and have done rescue for many years, Rhodesian Ridgebacks can be aggressive and folks need to be prepared when introducing a dog.

Anyway, The Ridgie didn't work out today. He wasn't a ridgie afterall. The guy had some kind of mix, the dog had no manners, and my dog was really stiff and unwelcoming to him. It's weird because my dog loves other dogs, people, kids, cats, everything. He was uncomfortable for sure.
So our search is still on.
