Baby girl spelling

Angela
My husband and I are naming our daughter Micah/Mikah. We're still debating on the spelling. While I prefer traditional and not "yoonique" spellings of names, this is a bit different. Our sons are Zack, Luke and Jack...notice the K's? Her name fits especially well because we always call Luke Luka and and he and our daughter will rhyme like Zack and Jack. I could go traditional because Zack is technically Zachary so Micah would fit just fine but we almost never call him by his full name. So...do I go with Micah for tradition or Mikah because it fits with the family style? Baby naming is hard.