I have a non american friend who got the green card by marriage.
Before getting married,he flight instructed in the USA,became an instructor,then moved on to freight in Cessna 402 while on work sponsored visa,became an FAA check Airman on the 402,then an Fo on RJ and was taken by United Airlines on Airbus at about 24 years old.
All is possible....this is America after all
Though,if i were you id work for the PIC time first...thats the best job insurance youll ever get.
Good luck!