brownbomber

I have been reading the rules about mini RTW but am a bit confused.

From what I understand I can make 3 stops and 10 legs.
I have found flights so far
SYD BKK TG F
BKK HKG TG F
HKG ICN TG J STOP 1 DAY
GMP PEK CA J
PEK FRA LH F STOP 4 DAYS
FRA ORD LH F
ORD DEN UA J
DEN SFO UA J
All other layovers <24hrs

Then I would like to do (any pacific destination) -SYD.

Cant find any direct flights in F or J from SFO. I assume I cannot go to SFO - Asia -SYD, is this correct?

So my other question are

Can I go back via Europe, turning in ORD
OR can I turn around in Frankfurt...and dont go to North America at all?
So confused... please help!
I dont fully understand the rules, and how to calculate mileage,to be able to make a decision!
What is the max mileage and how is it calculated?

Any suggestion in regards to routing from Sydney gladly accepted.

What miles would be needed also, the table says 205,000 for F ?

Thanks, Ive only ever flown direct flights, and never redeemed on miles,so a litle bit lost here!