i dont think lenghts as such have a big impact but if they rhyme or have a silly theme i think its strange.
on Dr Phill today there were twin boys on it Taylor & Tyler, i think they could have come up with something a bit more different they already share the same everything else!
and like if u had an Adam & Eve, Romeo, Juliet type deal but Evie is a very pretty name and goes with Gaby & Alex shortened or their full names.

Nixon & Tyron just so happened to be the same length ending in "on" we were going on our initals to match mum & dad and picked the names we liked within that.

having said all that my fav girls name has always been Tylah, if i had a girl now i dont think i could have a Nixon, Tyron & Tylah (2 Ty's)

hey congrats on 16weeks yayyy!!