This should never be done lightly, so beyond the self image questions here are some more to ponder?
Are you a poor swimmer? and do you expect to need extra flotation devices?
Are you into S&M bondage?, and do expect your master will need to twist your titties in clamps or put needles through them?
Do you sleep on your stomach or face down? what is their sleep factor rating?
If you were to turn around suddenly and whack your BF or customer in the face, would they recoil or bruise? Does either have a glass jaw?
OK one self image question, do you self identify with Barbie? and are you dating Ken?