ok, i guess i didnt exactly offer anything very usefull in my comment.
so hey, you are more fortunate than many if you are needing to go back to France
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months per year.
An METV is perfect for you as can nearly get 9 months in Thailand out of it if done right.
and you will most probably never be questioned about it at airports.
if they have difficult requirements, then try ringing the consulate. sometimes they will tell you not to worry about certain things.