Never painted an entire car at once before......
We ground on completes, Just old guys I guess. lol.
If its any help cranky, get a walking/painting system down while sealing and spraying base coat so when its time to clear you got it down.
You will know after the base how many cups of clear its going to take to do a coat, It will take a little extra clear. Have that pre mixed and in cups if possible.
Same if shooting single stage once your done with your sealer you will have a idea on color amount to complete a coat.
Anyhow most painters will differ but I like to shoot the roof 1st Right then Left then drop down to the hood left side once you get to the fender drop right on over and keep going. Then the right side of the hood , fender, onto the door, next qt , trunk lid , now your on the other qt and headed for that left front fender.
the tail panel if painting you spray with the trunk/deck lid pass.
Keep your paint with you right in the booth / garage so you can swap out fast, when panel painting dont stop at the gaps pass across them , switching distance each coat so you do not get a edge sag on a door end ect.