S Deva,
My understanding is:
I-140 is filed only in your name . Dependents do not come in picture till I-485 stage.
I dont think that you need a AP when I-140 is in process. I travelled twice out of country after filing 1-140 and before approval of I-140. My wife was travelling, out country when i filed my I-140.
On concurrent process i have no experience.
However do consult your lawyer.