I'm in the same boat as you: going to pick up a 2007 iron-lunged Classic from Mike in Oakdale in a couple weeks or so. I've never ridden in traffic but am planning to commute with the bike between Brooklyn and Central Park West. Maybe Chuck D, another Brooklyn rider who has a 2006 Sixty-5, will chime in about his experiences.
Anyway, maybe we'll start an NYC-area RE riders' group?
Jeff