Hi, Max, and welcome! You meet some of the nicest people through LC and get a lot of support from those who know.
I was a caregiver for my wife for 4 years. She was Stage IV NSCLC and given 9 months. She lived 4 years and led a pretty good life through that time, although she was taking chemo most of that time. Her first chemo was Taxotere and Carboplatin, which served her well. She also had radiation.
Most times she was able to get around on her own, bathe and dress, and her mind was always clear. She was able to go out most of the time.
I wish your husband many, many years. Sounds like both of you have a good attitude to attack this beast. Keep us posted and let us know how we may support you both. Don