tedhl,

I'll start from the end.

5. You can do LHR-x/SIN-HKG if you wish. As a matter of fact, you can start
your journey like HKG-x/TPE-x/NRT-LAX, if you don't mind flying AA.

4. Yes you can transfer at LHR three times, I've done it. Same day round trip?
AMS?

3. Just a suggestion, I'd rather go for distance, rather than segments... My last 3
cont OWE was (actually is still in progress, writing this from LHR) 40K miles plus,
and my next 4 cont OWE is almost 50K miles.

2. Sorry, can't answer.

1. I bet the odds that you will miss at least one flight out of your seven Saturday
flights, and at that point AA will arrange you an involuntarily reroute to your final
destination, canceling out all your wonderful segments...

Sorry I'm not answering all your questions, but hope I was some help. Cheers.