Clear bra is a must... I had 90% of my car done with the car off the truck from Nissan.. I even painter taped the entire front at the dealer for my 10 mile drive to the clear bra installer so there would not be 1 rock chip
My wife even led as the pace car so no cars would get in front of me too close
If you go clear bra read up on the best clear bras for white. Some will yellow over time so go with something that has a good rep for non yellowing properties.
Also NEVER use anything besides clear bra safe sealants as most products contain butane, kerosene, petroleum and other ingredients that yellow or cloud up the clear bra.