I am currently in this:

CCS-MIA-LAX-MEL-AKL-CNS-SYD-SIN-BKK-HKG-PEK-NRT-HEL-MAD-CCS

But they are about 9-10 cities for 30 days... time is short. Most likely i have to delete segments in this RTW.
What would you guys do? Visit where. I can leave HEL to overnight only. But i have never been to: MEL-AKL-CNS-SYD-SIN-BKK-HKG-PEK-NRT. I don't wan't to be rushing into the cities, but would like to know which of these take more time and so on.