Take a vacation, go back and get married IMMEDIATELY, then go to the US embassy in China to get visa TOGETHER(very important), then come back, then work.
If you want to get your GC first, forget about her. It's muc h longer than 4 years. In fact, nobody knows how long it will take.
It's a joke you will get your 485 approved in 2 months. Your lawyer knows nothing. In fact nobody really knows.