Comments about AC-140
Hi,
AC140- is quicker compared to normal CP. It is used only for Mumbai and Delhi consulates. For normal CP, you have to go thr NVC which itself takes about 3 months to pass the case from INS to the appropriate consulate. For AC140, you have to just file an I-824 and send that fee receipt alongwith other documents to the consulate directly. This will really save your time as the consulate immediately accepts the case and will generate the case number.
In my case I was not aware of I-824 fee receipt, so it got delayed by 2 months! But It should be fast if you apply well in advance(immediately after I-140 approval) The whole process for AC-140 should not take more than 3 months if everything is done quickly. Otherwise it will be approximately same as I-485 which will give you a liberty to change the job after 6 months from the filing.
Hope this helps,
-- Bhaskar...