I like your vision! My primary partner has a seperate apartment in his house with a bathroom and kitchen and there is a private entrance in the back. I could totally imagine living there with him and having a female partner living in the apartment! In fact, I could see us being willing to contribute to her financially if she would be like a "house wife"....okay- before anyone balks at that....some women like being a housewife!.....Hmmm.....my wheels are spinning!!
The key to life is in being fully engaged and peacefully detached simultaneously and authentically in each moment.