Couple of years ago spent time here trying to understand O ne World Explorer and Global Explorer fares. But then we decided to burn off lots of our existing BA Miles/Avios with trips to N. America, then S America and coming up Aus/New Zealand. We still have about 125,000 Avios and a 2for1 voucher so need to find another trip to use them on, but the round the world issue is rearing its head again. I have gone through all 40 pages here (my head is spinning with airport codes - is there a better way of looking them up then Google?)
Basics - BA Frequent Flyer, currently bronze but will revert to Blue soon. Live in London.

Places we will want to visit are as follows (appreciating some might have to be side trips).
Mexico, Cuba, Chile, Easter Island, Pacific Islands, Japan, India?, South Africa.

Does that route (which could be the other way round) suggest Global Explorer rather than OneWorld Explorer? Plan would be to fly Business
Which of those two is generally better value?
Where would be best place to start (not necessarily in the list above?)
And which airline to prefer and which to avoid - though Avios are the desired FF scheme.

That's a start! All and any help much appreciated.