As I said in a prior thread, Congratulations and welcome to the 1LE club. I originally ordered my car in early December of 2021 too, but cancelled the order after 3 months with no allocation after I found virtually the same car in transit to another dealer. Purchased my car on February 19, 2022.
I definitely recommend rock guards or PPF. I have ACS rock guards and side skirts on my car. Both definitely help with paint protection. Some people prefer the ZL1 Addons rock guards or the OEM splash guards. But regardless with the wide and sticky tires on the 1LE you need something to protect the paint on the rockers. I also added PPF on the front of the car, which I also recommend.