[gfell]

It would be a good idea to get some TEFL qualifications prior as many job adverts require these nowadays. There are some good online courses that are very affordable rather since you already have the teaching experience.

As you are both already teachers and from a native English speaking country, I would suggest to travel to Japan without a job, and apply once you arrive to the city of your preference. If you both arrive to Osaka (best place in Japan) for example, there will be plenty of jobs around. So you can teach at different schools, and still be living in the same city.