I would say that everyone should apply for a 6 month METV from the thai consulate in your country BEFORE you guys wing your way here.
That will give you about 9 months in country (in 60 day increments) and should be plenty of time to allow you guys to look into more long term visa options.
This is the website of the thai consulate in Vancouver and their requirements for a 6 month METV
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