I’m 5"6 myself, my other half is 5"10 and I like it that we’re similar height when I wear heels, I never wanted a really tall person, just well built..
Don’t think there’s anything wrong with same height or girl slightly taller. My Mum wanted a girl the same or similar height as my brother when she was looking (said she didn’t want small grandkids 
) but the girl he fell for in the end is tiny at 5"1 (he’s 5"8), does look cute tho..