Question about filling for EAD..help needed ASAP

[CaptainAmerica]

Hi- Please help, here are the sequence of event.

• I was on H1B with Company A, got I-140 approved, didnt file 485 yet.
• Changed H1B to Company B, and got married to a GC holder and file for a I130-family based GC and its approved, waiting for priority date to get current.
• Now my priority date with Company A got current.

Question- can I move to company A , get H1 transferred back, and file for EAD/485/AP?
If yes, if employment based GC takes time, and in the meantime Family based GC priority date comes through, Can I file for 485 on family based petition? or transfer case to the family based?
Please let me know my options.

I will appreciate if anybody can answer these questions asap.

Thanks

[immihelp]

You can't transfer the case from employment based to family based or vice versa, but you can do other things you mention.