I'm 5'6-5'7 and I ride 23 highs which are a couple inches away from my waist.
Depends where you like them a good way to find out is to get like a kick scooter with an adjustable bar and adjust it to the height that you like.
LOL dont ride 23 stick to like 21 if your that tall it fucks with your hops if there to high and just looks weird like a bar just sticking up out of nowhere.