Repaint question

I'm using bc/cc and am not happy with some tiger striping on the hood and it has been clear coated. Is it ok to sand with 320 or 400 and reshoot the base and clear or would it be better to seal it before base/clear? Do I need to sand off all the clear coat first? I did talk to the local body shop and found out metalic takes a little different technique to shoot. Better late than never, the rest of the car looks great.

Anyhooo, what would you guys do?