AOS processing time question -pls help me

[chiragdin]

Hello Everyone,

I am 18 yr student on F1 status here. My mother just got green card through consular processing in India. My half brother is a US citizen and he filed for my mother. My half brother and I have same mother. My mother wants to file for green card for me . And since I am already in US on F1 (student) visa. I will apply for AOS (adjustment of status). I have following question.

1) What processing time will apply for me to get a green card?

As per INS, there are two processing time.
One for consular processing which may take 8-9 years . I have attached link to visa bulletin.
Category for family : 2A

http://travel.state.gov/visa/frvi/bulletin/bulletin_4417.html

Second for AOS processing time which are based on one of the four regional service center. such as vermont, california, texas and Nebrasaka. This processing time is usually 3-4 years.
I-130 for children or spouse of green card

https://egov.uscis.gov/cris/processTimesDisplay.do;jsessionid=bacrTF_ssgFSx4arsFT8r?type=serviceCenter

PLS HELP ME IF YOU KNOW WHICH PROCESSING TIME WILL APPLY IN MY CASE ?

Thanks

Chirag