I love unusual names, and Rocco is a cool name!
I wouldn't worry too much about his name if he becomes a CEO, unless his name is Tinkerbell, then I don't see a problem. Unusual names run in my family, it builds character and we all love our unique names.
With our son, I stopped telling people the names we had picked for him - just can't understand why people are so rude about their reactions - everyone has different opinions. Mind you - it shouldn't matter what anyone else thinks.
Go for it!