Yep, that's a stupid question.
Look, dates and people aren't one-size-fits-all. You are going to make occasional errors in life. That is the nature of human existence.
If you screw this up, the world will not collapse into itself. If you hold her hand too early, or too late, she will not slap you, call you names, and post unflattering things about you online.
If you are absolutely this committed to knowing how your relationship is going to turn out before it even necessarily starts, then I hope you have seen every single spoiler for the movie you're about to go to and are going to have a wonderful safe time utterly devoid of any surprises the film might have in store for you.
Because you are behaving the exact same way.
Take chances in life. Not foolish ones. Don't play with your very existence. But holding someone's hand a minute into a date or ten minutes or thirty or near the end or whatever, and chancing that one of those might not be oh so absolutely perfect perfection is not like playing Russian Roulette.
Relax and enjoy yourself. Please.