Beginnings and Endings, right?

The end of my two-and-a-half-year relationship last Saturday was not out of the blue or in anger, and though I have had some pretty low emotional points about it in the last week, overall I'm feeling very positive that it was the right decision and I am moving in the right direction.

This week has been an explosion of options. I realized that boyfriend-man was a major, though not the only, thing pulling me back to the US. I think I am not moving back this year, and I am re-exploring options for the next few years. Here are some of the options on my mind:

For the rest of this year and the beginning of next:
1) Stay in Korea and keep earning my Native English Speaker dollars and paying off my student loans
2) find a job in the Midwest to be close to family and friends, and keep paying off student loans

For the year after next:
1) Move back to the US and pursue grad school/teaching certification. This has been the plan I've been building most of this year, though I've been having trouble deciding whether to pursue Montessori or a state teaching certificate, or both.
2) Move back to the US and pursue grad school in Environmental Science or Engineering. I could still make tutoring a regular part of my life, and perhaps have the more individual affect on their lives that I would not be able to have if I only saw students in classes of 30.
3) Move to China under a Chinese Government Scholarship and pursue Environmental Science or Engineering at a Chinese University. This would put me in China with some long-term stability, and I could make/continue solid friendships and start a life as an international science liaison.
4) Move to China and get Montessori certification at the teaching center in Hangzhou. Teach in China and return to the US when/if the job market increases with enough teaching experience to be competitive
5) Other things yet unthought of that will give me opportunities to teach, travel, and keep involved (even vicariously) in scientific studies.

I posed a couple of these on facebook the other day and got a lot of excellent feedback, much of which supported my feeling that I don't want to teach in the US right now. I really, really would like the right answer to bring me closer to home, but I also don't want to move home and feel stuck. So, right now I am leaning towards things that will keep me on this side of the globe for a while longer.