I'm a tattoo junkie.. the only problem is I'm still trying to think of what I want my bodysuit to be. I've only gotten one at the base of my neck, and I've been thinking for about 6 years what I want the suit to entail. Until I'm absolutely certain, I'm not going to do anything else.. I like cohesion and an overall theme as opposed to a scattershot of "wizard here," "skull here," "rose here," "koi over there," "tribal thingamubobby here."
Make it a personal significance, and talk to the tattoo artists. Most of them WANT to do something original that the two of you think up. Everyone gets flash art. Most artists get tired of doing cherries, Tinkerbell, skulls, etc., because EVERYONE gets them and they're boring. They make money, though, so it's pretty simple, but they need good stuff they can put in their portfolio, too.
So talk with the artists and get an idea for what sorts of things are important to you, what kind of art may look good on you (some skins hold colors or greys better than others), and what sorts of things they've done before.
Good luck! This is something highly personal and will stay with you forever, hopefully.