I live in Irvine and it's great for riding, Bike Lanes everywhere and they even have buttons on every Traffic light facing the road so you can halt the Traffic like Pedestrians.....
But as someone pointed out, Irvine and Newport bch are adjacent, it's hard to figure out where the Border is....
Anyway, welcome to the area, I'm sure you'll become a regular here, the SoCal Members on this Board are really friendly and great to ride with....
If you have any more questions just ask, but I'm sure you'll love riding in either NB or Irvine....