Sorry - forgot to post planned route. It is very much in formative stages right now. But these are the places we need to go - to see Central and South America and Southern Africa and the Pacific.

We live in London.

First place we want to get to will be Boston (BOS) or New York (JFK).
We then intend to do a surface sector all the way to Santiago. We actually prefer travelling on the ground and seeing things, but we know Panama to Colombia by surface isn't 'safe' so that will need a flight, plus we want to go to Cuba which we understand won't be possible on the RTW ticket if we have AA flights (??)
So we would cross Canada to Vancouver (by train), south on the West Coast to Mexico, pick up some tour through Central America, hop across to Colombia then south through Peru and Chile then East to Argentina and back West to Santiago. There is an argument that says we pick up the RTW again in Buenos Aires (AEP) to SAntiago (SCL) then on a Global we would go Easter Island (IPC) - Papeete (PPT) - Auckland (AKL). If not on a Global we would have to go back from IPC to SCL or LIM then to AKL.

Then AKL-SYD-JNB then surface to Nairobi (NBO) from where we would want to get home so I guess we would book NBO-LHR-AMM (or could we stop at LHR??)