I am pretty confident that you will get the approval this FY year itself. I know that you have some concerns regarding your current job, but you will be fine since you have already replied to the EVL RFE. I know 2 people who got their GCs after they were fired by their GC enployers in 2007 and both of them recently became US citizens, without any issues. So I do not think you will run into any problems because of job change.
I am in a similar boat - want to get GC at the earliest. Have tried everything that i could do from contacting the congressman to getting an info pass appointment (for 20th Aug). The response I have gotten from the congressman is that USCIS is pretty busy and I need to wait for 30-45 days. Keeping my fingers crossed and hoping for the best since other things are beyond our control. I am pretty sure that when you get the GC, you will think about all the stressful time from 1 Aug 2013 onwards and have a good laugh.