I cannot for the life of me come up with any good middle names for Max. My sense of rhythm is screaming "FOUR SYLLABLES" but I can't think of any four-syllable boys' names I like - other than Maximilian. :) The middle name doesn't HAVE to be four syllables; anything that flows well can be considered.
I CAN think of good middle names for Maximilian... but Maximilian is out as a first name. :-\