Kavieng / Emirau > Bring the Big Macro Lens?

Going to dive Kavieng for a few days this summer, followed by a liveaboard trip around New Hanover and up to the St. Matthew Islands, Mussau and Emirau. Not sure if I should bring the big macro lens (100mm, on Sony NEX-6 = 150mm equivalent). Anbody dived that area before, could give me a few hints if there is enough really small stuff around to make it worth the hassle? It's at least 1.5kg more, everything included. I think I'm good for Nudies with the 1650 + CMC, and wide angle is packed anyway. Thanks for any inputs here.