Hmm, I doubt you’d get that sort of look with those size implants but my advice would be to ask to see your surgeon again, or you can have a chat with him on the day of your op and explain your concerns and what you would like to achieve, then he can just decide what’s best in theatre when he actually opens you up
Being 5 ft 6 I think you would carry the 400’s very well, but that’s just my opinion x
PS this doesn’t happen very often but anatomical implants are more prone to turning in the breast pocket because of their shape x