@ixtab, thanks for correcting of announcement! I'm planning to make announcement today at about 12:00 UTC and set starting date to tomorrow (Sunday, 15 January, 12:00 UTC).
In the meantime I'll change my Python tool to handle source files with no locale code suffix (didn't made it yet, but it should be easy) and will try to follow the procedure on some new private Transifex project (in testing purposes).
(Now, looking at written detailed plan, I'm not so sure about it's necessity.
It is so simple and leaves almost no room for error. But, guess, this effect of my assurance of success was the main point of writing a plan
)