Me and my wife have are moving country next year and want to do a trip before relocating. We currently live in London so our trip will start here. We are looking to see as much as possible especially of places far away from Europe that we likely will not return to. It will roughly be a 3.5 month trip and most of the time will be spent in NZ/Aus, Japan and Malaysia/Thailand. We are planning to rent a car in NZ, Aus and South Africa.

I know there are quite a few destinations in our plan, and 3.5 months might seem like a short time for it all, but I believe we both have quite impatient personalities, so this is something we have taken into account when planning our trip. We are quite worried about crime, food poisoning and all the rest so we are mostly looking at visiting developed and safe countries, looking to have a fairly comfortable stay in medium standard hotels. We have a reasonable budget, but we don't want to splash out too much.

I wanted to post our planned itinerary to see if you have any comments on it; mainly in terms of places worth visiting, or if the schedule is not possible to complete comfortably in a 4 month time frame. Also, SCL is a destination I'm not too sure about but there doesn't seem to be any other options from South America to the SWP. As for China, are PEK and HKG good choices? Seems like there are limited flights onward to South Africa from places in China other than HKG. We have planned trekking from SIN to BKK mainly by train, is this a good idea?

Many thanks for your comments.

LHR - GIG
GIG - GRU (Surface)
GRU - EZE
EZE - SCL
SCL - AKL
AKL - SYD
SYD - SIN
SIN - BKK (Surface)
BKK - NRT
NRT - PEK
PEK - HKG
HKG - JNB
JNB - CPT (Surface)
CPT - LHR