Baby name advice!

Danielle
So I think we're going to name our son Cole :). 
My question is this... Would it be totally dumb to tweak the spelling to make it a little unique? Like Kohl, Koehl, or Kole? 
I feel pretty silly about it, it's pretty insignificant and I would hate for it to cause annoying issues in the future with mispronunciation from others, but I also feel like it needs a little something extra to make it perfect for him.

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