I'm a citizen of India and as per Indian Passport Law, I'm not supposed to send the passport outside the country where I'm residing by mail. I cited this reason and asked them to change the VO.
I live in NJ and provided my present address to the CIO office when I emailed them. Looks like the VO to which they will send the revised passport submission instructions is dependent on how close you're to the nearest VO. As you're in PA, I'm thinking they would ask you to send to the one in NYC.
As far as the processing times go, I'm not sure what exactly it is now. When I searched in multiple forums like this canadavisa, myimmitracker etc I see may have got in one to two weeks. And for few it took more than a month as well.