7 months in South America

Hello guys,

I am trying to plan for my long trip in South America. Normally I am extremely spontaneous but this trip involves som activities that need bookings in advance so I am trying to get a big picture: Patagonia and Antarctica.

I have 2 options:

1. Colombia (Oct) -> Peru (Nov) -> Bolivia (Dec) -> Brazil ( until mid Feb after carnival) -> Argentina/Chile (until end April): Patagonia in March and attempt for Antarctica.

2. Peru (Oct) -> Bolivia (Nov) -> Chile (Dec), including Patagonia (end Dec or beginning Jan), then to Ushuaia for an attempt of Antarctica -> Argentina ( until mid Feb) -> Brazil ( mid Feb to end March) -> Colombia (April)

I am torn between two options because each has pros and cons. Patagonia in option 1 will be crowded and pricey, for option 2, the weather is more unpredictable but the park is less busy and I could see autumn. For Antarctica, I am not sure about the last minute deals this year but have a bit of anxiety if I show up and ask at the end of season ( in March)

Any thoughts?

Thanks a lot!