crank arm length
This subject has probably been discussed to death, but I've missed it.
I am 4'10.5". I always use 165mm crank arms. I currently am building up a gravel bike from scratch so I can decide what I want for a crankset. As I was poking around I read somewhere that 152mm arms are good for kids. Well, I am kind of kid sized. How do you know what size crank arms might be best?