Hi Juan - I just got back from my PolarTREC expedition - cruising on the Oden from Punta Arenas to McMurdo Station - basically the opposite of your trip. I toured the Palmer briefly when we had our mid-cruise rendezvous. She is a wonderful ship and I know you will have an amazing time!
It seems like your packing as already done! I'm glad you are bringing an external hard drive - I didn't and ended up filling up all my flash drives and my computer drive too with pictures and video! If you haven't done so, borrow electrical adapters from ARCUS/PolarTREC. You will need them in Christchurch and Punta Arenas.
Please contact me with any questions or concerns - we could arrange a phone call too. Just talk to Janet about it.
My class and I are looking forward to following you on your expedition! Cheers! Anne Marie