Yes, if you do an AOS. Look at dimag kharab sir's time line its was a 5 month process for him after his number became current. as your case# if 27k I don't think you will be current up until june july 2011, so do the math....june to sept is just 4 months, do you think the USCIS will be able to process ur appliaction in 4 months??? if they don't do it by the end of Sept you are doomed.