Breaking up due to her height

Everything is perfect with this girl I’ve been dating for 2 years. She’s cute enough and smart and makes good money. The only problem is that she is only 5’3” tall (which is good for an asian), while I’m 6’4”. Im scared she will give me short kids. My 6’3” uncle married a 5’2 Latina and his sons are all under 5’10. Is this too shallow? Can some genetics experts tell me otherwise? She’s expecting a proposal this year and I love her but I also don’t want to mess up life for my sons.

Notable comment reply from OP:

Does 5'9 mean 5'10? Because that's short, especially for a son. Even all of my sisters are over 6'

Imagine, the tragedy of having a 5'9" son.