jambalakadi1,
Sorry for the delayed reply. Was away.
We are planning to start 2nd GC through my Wife (Physical therapist..PD is current) and we are opting for CP.
1. can we do CP while AOS is pending?
Normally, no. But under special circumstances, Yes. Search posts on Attorney Certified 140 (AC 140)on this and other sites. A lot of people have been able to do it successfully. We were planning to do it ourselves but our 485 itself came in before we could send the paperwork to the consulate.
2. If CP is rejected for any reason. Can we comback using Advance Parole from my First GC process?
Again, normally no. But if using AC 140, yes! That is the beauty of Ac-140 - best of all worlds
Pros
1) Speed of CP
2) AOS benefits like EAD, AP and AC-21 portability
Cons
1) Need to schedule overseas visit at short notice - vacation and cost issues
2) Might need to redo medical tests - not sure, check up on that.
3) Where will beneficiary added in CP process?
In normal process (or even AC 140) believe that spouse and you go together for CP interview with proof of marriage etc. Remember, LC and 140 are only for the primary beneficiary. Check up if spouse might need seperate CP interview appointment or can just tag along with primary beneficiary.
Hope this helps!