OK Here goes. Below is a map of my proposed travel route. Not sure whether I will be starting in Mexico or Brazil . That will depend on flight prices.But as you can see, it will be quite extensive and should be about 3 months.

The travelling mode will be backpacking and I am getting valuable info from net as to what to take with.Will let you know what it is before I go.
At this stage it looks as if I am going to use StaTravel for the Mexico leg and Flight Centre for the South American leg