I see the Delete model (2021) has a 56 cm frame but not the Charger 3. It seems the 56 frame size is from 1.9 to 2.0 m rider height which seems to be ideal for someone your height. I still think you need to test ride one. Just be aware that the handle bars have some adjustment for your reach so you may still be able to adjust a 53 cm to your comfort level.