Green Card for Wife

If you planning to apply through consulting company, its tough to get extension, just use what ever you have now. Further if she spent any time outside US in the last 6 years, for that much time you can apply for extention now.

How your F1 trails are going on? please share with us.
 
If a person goes outside of the country for around 6-7 months, does that buy extra 6-7 months to extend the H1B visas?

Yes, it can be extended by that amount. and if you have the dates, you may accumulate all the time spent outside the country during the 6-yrs of H status and apply for the that much time of extension.
 
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