Welcome to the forum.
If you are considering an extended warranty, SHOP AROUND. Prices vary from dealer to dealer. Buy the GMPP plan ONLY. It covers the most and is accepted at all dealers.
Forget about any dealer "installed" paint treatments. "Acid rain treatment"...that's a joke. If you stck around here for a while, you'll get to know all the good stuff to use on the paint, leather, vinyl and tires.
This is a great place to learn a lot and to meet others in your area with Z's. The contingent from NJ are all weird kinda guys so you may want to hang out with the New York guys.
Stick around and learn more than you ever thought you'd know about your new Z06.
Welcome to our world...you're gonna love it.
Charlie