I have never heard the word 'launched' used in the immigration context.
Are you talking about 'launching' the PERM?
"Launching" the I-140? Or, perhaps
"Launching the I-485"?
Last, and most important, what did the company's immigration lawyer say when you asked him/her these questions?
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GC process with not hamper her chances of acquiring H-4 visa. As long as the marriage takes place before the green card comes through, she will be eligible as a derivative. You cannot apply for green card until the priority date is current and so if the process has not even started, there is no reason visiting this issue at this time.
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No it does not "hamper" anything unless the H1 and the green card husbands are two different people.
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