camanda's Green wedding

This is my little cousin Emily! and i can't wait for her to be my flower girl! - she is the one who insists that green dresses are for boys!! so i might have to compromise on a flowergirl dress for her! haha but i think no matter what she wears she'll look adorable!!
***The problem is -
I'm having is picking a ring bearer...from my 2 cousins (my only 2) they each have kids - emily and jacob are brother and sister from katie and then Max, Sam , and Joe are from Wendy...katie's sister. so my problem is - out of all 5 boys...which one do i have as a ring bearer?? Max is the oldest (he'll be 4) so i'm being told he should just be by default - but how do i chose?! Emily was a given as she is the only little girl i know! but which boy?!?!