Looking for company for a life time trip in South America ✈️

Hello greetings from Argentina 8)
My name is Santiago I have 22 years old and I’m looking for company for a life time trip in Latin America and Central America.
Starting at Buenos Aires and going south to see the whole Ushuaia till the bottom touching Antarctica
After that returning by plane to Buenos Aires and going to Foz do Iguacu and from there to do the entire coast of Brazil to Fortaleza and spend the Carnival in Salvador de Bahia!
From Fortaleza fly to Peru to visit Machu Pichu
From there go to Ecuador to go to the Galapagos Island than Colombia from there continue going up to Panama and Costa Rica and from there end up back home.
Begin in October-November till the end of March
That's my plan, but everything can change during the trip
I'm looking for company for the ride for the whole trip or parts of it…
I hope you answer me as soon as possible and I’ll be happy to get some other ideas plans and help to make this ride.
Such as making the coast of Brazil? plane? bus? which is better? and cheaper?
*** I'm not gay ***
Thanks I hope your answer soon
Santiago