If everything is not 100% before you shoot, Its a total loss and waste of money. I sprayed a jeep one day and the hood and doors the next, Same everything, Booth and all. But there was more humidity that day than previous and the metallic sprayed a different way and looked night and day different. Only fix was to start over from scratch, Double everything.
Like bullitt said, Not making it sound bad, Just letting you know the truth that will happen and if not done right. Do it correct the first time so there is no second. Good luck with whatever color you choose