I would first try to find out the water temp there and weather conditions a day or 2 before you go. That could make a difference in your needs. I myself would think about renting a suit out there, its only a few bucks a day ($10-$20) and if you are not diving everyday, dont rent one for that day. Email some shops to find the best deal, you are also on a great site where you can get more info. Have a great trip and take lots of pictures and post them here.