Rough Itinery for the trip

Here is my plan for the time being:

12/7 - Arrive in Fiji for two days of beach including a day trip to an island
13/7 - Arrive in the States for two days in LA and two days in Vegas
18/7 - 25/11 - Arrive in Mexico city to start the 4 1/2 month trip down overland to Santiago in Chile to meet Mum, including:

-1.5/2 weeks in Mexico
-1.5 weeks in Guatemala
-2.5 weeks in Honduras
-1.5 weeks in Nicaragua
-1.5 weeks in Costa Rica
-.5 weeks in Panama
-2.5/3 weeks in Colombia
-3 weeks in Ecuador
-2.5 weeks in Peru
-.5 weeks in Northern Chile

Then 3 and a half weeks with Mum in Patagonia, ending up in Buenos Aires. After that:

-1.5 weeks in paraguay
-5 weeks in Bolivia
-2.5 weeks in Venezuela/Brazil ending up in Salvador or Rio for Carnaval.

After that maybe working in a backpackers, teaching english, heading up to Canada...........