Environmental suit for Galapagos

I am going to the Galapagos mid November for a dive trip. (First time in the ocean with my new camera set up - can't wait). What should I bring for a dive suit? I have a BARE Trilam HD Pro drysuit. I am not sure what to bring for underwear? I was thinking of bringing a few layers of thin fleece underwear and light gloves and light hood. Will I be cold? Yesterday I was diving and the water temp was 43F. I was warm in my Hi-Loft Polarwear Extreme underwear with thick gloves and thick hood. However, I think this will be too warm and take up too much room in my dive bag. What has everyone else used? Any recommendaions would be appreciated.

Thanks,

Shane

I dove with 5 mm wetsuit over a 2 mm vest with a hood and I was pretty comfortable. I had gloves but that was mostly for protection from the barnacle encrusted rocks we held onto. Nobody else on the boat wore a drysuit. The water at Wolf and Darwin are generally quite a bit warmer than the southern islands.