Before you start the journey towards Antarctica you should first book the cheapest and luxurious Cruise ship from the 10 Best Antarctica Cruise Ships to Board (https://onlinetravelhype.com/honeymoon/ ... ise-ships/)

If you're going to Hiking I would suggest take the Osprey and buy a daypack that you'll be happy to have on your back all day but ideally one that could slip inside your main pack. The little fold away bags are good if you're not carrying much stuff in it, but try using them as a proper daypack and you'll soon regret it and before starting your journey towards Antarctica through Cruise you might check Flyertalk forums where you can get the promo codes or extra deals for the cruise ticket.