Don't bother about the address change, I had moved from Hyderabad to Bangalore and asked one of the agents in the Hyderabad RTO to get my DL extract and mail me (hard copy).
Besides, keep in mind two things, one is to have the chip based License and the other is get the hard copy of your extract, the MTO here doesn't accept soft copies of extracts.
From my experience I got my G2 in a month using my extract and the full G in 2 months. I could have gone for a direct G post my G1, but it was a good choice to drive in G2 for a while and get some experience.
Hope it helps.