Personally it does sound like a lot of m’s to me, especially since [name_m]Maxwell[/name_m] and [name_u]Michael[/name_u] also have similar endings. That being said, middle names aren’t used that often so I don’t think it would be the end of the world. I love that you’re due on your dad’s birthday! Such a sweet way to honor him.
It would depend on the last name for me.
For instance, [name_m]Maxwell[/name_m] [name_u]Michael[/name_u] [name_m]Mitchell[/name_m] would sound silly, but [name_m]Maxwell[/name_m] [name_u]Michael[/name_u] Mathers sounds just fine.
I adore alliteration, but I have to chime in and say that [name_m]Maxwell[/name_m] [name_u]Michael[/name_u] is a little too much. Not because of the M’s, but the fact that they’re both two syllables, end in L and sort of have a K sound in the middle…
Maybe just use [name_u]Max[/name_u]? [name_u]Max[/name_u] [name_u]Michael[/name_u] sounds cool