To clarify...

I want to go West on my flight, not East (my final destination is JNB and I want to have a little fun getting there - coming back I will most likely go through Europe). So the JFK - FRA- SIN- BKK is not the route I'd prefer, as I pass by JNB on the way.

When I refer to First Class, I do mean whatever highest class each airline offers, I know some of them are Business Class.

Thanks.