I know this isn't what you want to hear but unless you're trying out for a modelling career or something in fashion then I'm not too sure if your life would change if you go from 163cm-->170cm. It's quite literally the average in the U.S for a female and female beauty standards don't force them to be tall, at least in America and a lot of western countries.
I don't know though, maybe in your culture it is different and female heights is emphasized along with male heights. Whatever you choose to do, good luck.