Here's my latest plan for a biz class RTW on a DONE5.

This plan involves buying separate economy class tickets for CPT-JNB and SYD-MEL-SYD and SCL-IPC-SCL.

DONE5, comes in at about 293,000ZAR in the booking tool for 2 adults+1 child. The infant is on top of that since I can't book that online.

JNB-SYD QF (Been on many Qantas 747s before, this may be the last)
SYD-NRT JL
NRT-CMB UL
CMB-KUL UL
KUL-RGN MH
RGN-HKG KA
HKG-LAX CX
LAX-ORD AA
ORD-CUN AA
CUN-JFK AA
JFK-BDA AA
BDA-MIA AA
MIA-SCL AA
SCL-GIG LA
GIG-LHR BA
LHR-EBB BA

16 segments, every stop is somewhere where I actually want to go (although Chicago is a bit of a case of "since I'm in that general direction anyway").

I'll be missing Papua New Guinea which I wanted to visit but the above is 7 months worth and I think I'll be out of time, out of flight segments and out of cash on this trip. Another year for PNG.

BUT - one of the things I'd like to do on this trip is make as many flights as possible on aircraft with good business class cabins. Therefore I wonder if taking so many flights on AA on 767s & 737s and KA's A321 is a bad idea.....?