nope not too long at all ... my DD first name starts with a 'C ' also and is 8 letters long and she has two middle names (one 5 letters and the other 6 letters) and her surname is 5 letters and it looks fantastic, she gets many compliments

How about Charletta ? for something different !

But then the middle name would have to be Isabelle and not Isabella !

I love Arabelle or Arabella.