When you say that you will teach abroad but will go back to the States, do be careful with that line of thinking. Many people go abroad and find themselves staying out long enough for it to be very difficult to return. If you go abroad, then either set a time limit and stick to it, or go for the areas where
ESL offers decent jobs, though that is often in universities and requires a Master's as an entry. If you come back home after, say, five years, you will often be at a disadavantage over other applicants.
The Foreign Legion comment may seem bleak, but there's a lot of truth in what they say. The market is oversupplied in Europe, an area I wouldn't go near nowadays, and wages are tumbling; I have seen jobs advertised that are paying the same or less than I was making there a decade ago. There are still opportunities and it can be a rewarding job, but it is an area that has more than its fair share of dodgy outfits and rip-offs.