running tights

Hi ladies, I'm a fabulous chunky butt new diver, 5'9, size 18, 42DD and am heading to the Bahamas for a week-long live aboard with up to 5 dives per day. I am hot blooded and loathe a wetsuit. I just wore my bikini in the keys last summer, but it was inly 2 dives. My questions are these: Do I...