Honestly i don't think having a unique name is any more of a PITA with spelling as a 'traditional' name, so many traditional names have variations now your almost guaranteed to ask 'how is that spelt' my name was common in high school yet the other 3 girls i knew with it all had a different spelling.

I think go with what 'feels' right, which do you like most, is it JUST the spelling stopping you from using the unique name?