Why are people giving the OP crap about the predicament OP posted asking for help over?
"Don't you dare ask for help! You don't deserve help! If you deserved help, you wouldn't have needed help in the first place!"
Congrats OP on 600k punchout number. I think my number is probably close to that. I also like exotic travel-option job ideas like teaching in China (and enjoy teaching generally, but wouldn't want to downshift to the pay yet).
I didn't take up the ESL bit because I didn't have a reasonable expectation of the savings making it a plan instead of an excursion, but that all changes when you have compounding working in your favor. The last 2 years, I have chosen to remain on my higher-octane savings rate so I can really get the generator going. For you, I would say wait 2 years as well. Your mind will probably appreciate having a concrete exit period, even if you're not leaving right this moment. 2 years would put you close enough to half your date that if you taught for just 1 year, you'd be just about half, and you could make whatever adventure of the next 10 years you wanted doing anything that paid the bills.
One piece of advice mentioned is the "running to something rather than from something" idea. If you can take any vacation at all from this current job and use all of it to interview people from other jobs, or even job shadow a teaching mentor or two, do that. Make your entire vacation figuring out what you want to do for the next 10 years, and then fully embrace it - whether it's teaching or whatever else - and you'll be much happier than if you're simply trapped in a new, lower-paying gig that loses its new-job-luster after the first year.