my wife as an F-1 visa holder in the US wants to apply for NIW-EB2 green card, and we are filing I140 and I485 forms concurrently within the US(I am also inside the US with the F-2 visa status), we also want to apply for EAD/AP combo card. I want to know:
1.How long it may take to get our combo card?
2.Can I as an F-2 visa holder by now, and a combo card holder in the future, establish my own business in the US and work for my company legally?
3.Can I establish a LLC company and tax it as S-Corp?
4.Will I get SSN when I could get the combo card?
Thank you so much in advanced!