That could work. A breed that is more laid back. I don't know why Maisy has been good with my old cat but she has. She went after my Guineas as a pup and they attacked her. Hasn't stopped her from going after them. Trixie, the rescue, went to meet Sissy, the cat, Sissy hissed at her. Case closed. Trixie had been around cats because she is fine with Sissy.
But it sounds like you'd have something done when the back docs think it's time. That's good. Wait, will they do surgery with your COPD? How is that going? You haven't said anything in a long time.