I am in the middle of DONE4 and started to plan for the next one(again), going to start from OSL again and looking for the below routings, not so creative again but it pretty much covers the place i need to go.

OSL-xDOH-HKG-SYD-AKL-HKG-CTS-HKG-HND-JFK-SFO-xDOH-VIE-xDOH-OSL

Was thinking detour the HND-JFK sector as HND-HNL-DFW-JFK to pick up some more miles on the way to JFK but if I travel back to SFO whether this is considered as backtracking between Hawaii and other points in North America even i have a stopover in JFK?