Since you're already set on leaving, you could maybe even compromise: leave the job now, then look for new jobs at a casual pace while you take things easy and recharge. That way, you're not missing opportunities at places that appeal to you and that will treat you better. Plus, ~6 months from now is pretty close to the end of the year, which will affect the number of new job opportunities that come up. Most companies don't hire around the end of the year.
Future employers will question a 6-12 month long gap and may read things the wrong way if they see it next to a short time at your most recent job. Granted, that's not to say that it would be a dealbreaker for a future employer, but it will be something that comes up.
Whatever the case, it sounds like the decision you make will be the right one. Good luck in your endeavors.