Lakeview Harbor or Port of Call for a really good burger. Ground Patti or WOW if I'm lazy and don't feel like leaving Metairie.
A smooth ride on New Orleans streets? You don't ask for much! Not that I can think of in a relatively safe area (Haynes Blvd out to Paris Rd, then up to I-10, checking out Lincoln Beach on the way? but again not a great area). Head West instead and take the levee or Airline into St. Charles parish?
Actually I've been thinking about going ride on Hwy 3127 on the westbank. Its smooth and not much traffic. Go across the Luling Bridge (not on your bike!) and take a right on 3127, once you get away from hwy 90 traffic thins quickly.