Hi,
Long time lurker, first time poster. This is my second Done,last one being a Done3, organised by travel agent.Not sure if this is the right place to ask for any areas i can improve (i.e. save $$, earn greater miles etc) my Done4 ex AMM. I am planning to book for Sept 2013 as partial work travel.

Currently this is what i have constructed:
AMM-CDG-HEL-MUC-LHR-BOS-JFK-IAD-YYZ-SAT-SFO-NRT-HKG-SYD-BKK-AMM

The CDG stop is just transit (>24hrs)for a surface sector, and possibly HEL will be transit stop aswell. I am wanting to add more sectors in Northern Europe if possible.

Q1)If i land in SYD is it a valid stop,or i will have to create Done5 instead?
2)I must to go London for a few weeks, but from my reading that on this forum, pax taxes make it more expensive. Can anyone suggest an alternative ?
3)What is the cost of adding two additional sectors for Europe?
4) How can i ticket this, AA rtw desk, then Emeco still available? With what going on in CAI atm, is there an alternative?

I am halfway to AA platinum, so i should hit PLT status halfway through
Any help would be appreciated. I plan to book this is the next few days if possible.

Thanks in Advance.