What size tits should I have?

Hi everyone this is particularly aimed at women members or TS girls. I'm involved in an online enforced feminisation role playing game. I've recently been enrolled as a slave at an estalishment where I will be transfored from a guy to girl. A part of the game I have to select a pair of implants to have fitted. They range in size from A to Dd with a bonus humungous pair if I want. I want to make my character as realistic as possible so need to know the pleasures and perils of boobs of various sizes for a girl. Thanks for reading this and any replies. If anyone wants to feminise me for real please get in touch.