Mrth, it sounds wonderful. Holding out for the " Perfect " spot could take years, better to get moving a head with what you have. I am pleased for you. Lowering your carbon foot print is always a good thing for the planet.
Down sizing is never easy. I am a Hoarder and Love my stuff. It makes me feel good to look at it. But do I NEED it, no, does it complete me, no, it is a hard bullet to bite, but you can do it. Much of the stuff in my basement has been there for low these many years not. I still have books from college that I have never looked at in 30 years, there is stuff from High School for goodness sakes, I keep them to trigger memories I guess. You will find that once you get started down sizing it will be easier than you think. It is amazing how little we actually Need to get by. Good Luck.
Never doubt that a small group of dedicated people can change the world, indeed it is the only thing that ever has.