I know I’ve posted this before but baby will be here sooner than we think, so making one last poll:
Which middle for Miles? Flynn is a direct nod to an honor, “Lynn,” and Shepherd is an indirect nod to this same person (through a song they would sing to us). Would you consider that enough of an honor?
Last name is one syllable, similar to ball or mall.
I think what matters most is that it’s an honour name to you, and you see the link!
I like [name_m]Shepherd[/name_m] more here, since it breaks up the syllable flow with your last name (so it’s 1-2-1 instead of 1-1-1, which sounds a little choppy to me)
I think they both work very well as honours, so I voted [name_m]Shepherd[/name_m] to avoid all 3 names having L sounds (if your last name does indeed have them too) and being 1 syllable. It seems like it flows better.
[name_m]Miles[/name_m] [name_m]Shepherd[/name_m] 
and yes, I think that counts as an honour!
[name_m]Miles[/name_m] [name_m]Flynn[/name_m] is my favourite! 