Which service center
If you are in Nebraska service center, then you better think of filing
485. I was in the same boat as you and opted to go for CP. Filed
I-824 to change from 485 to CP, so far no approval after 5.5 months.
My lawyer said that even though if my I-824 was approved today, it
would take another 5 to 6 months for the interview assuming that INS
is working fine. I regret that i opted this one,by now i could had my
freedom to change my employer according to the new 6 months rule.
I heard people have been waiting for the past 7 months for 824 approvals.