I'm a newbie to RTW trips, but thanks to this forum, I've done a lot of reading in the past few days and have created a LONE3 itinerary. Please check it out and provide feedback if you have any. I'm also oneworld Emerald, and I will credit miles to AA. I plan to upgrade AA segments using 500 mile upgrades (domestic) and EVIP (international). I tried to avoid BA and CX segments since they have little or zero mileage crediting to AA. I'm starting the trip in Hanoi, but I am currently based in SFO.

1. HAN-NRT JL ASIA1 (connecting in NRT)
2. NRT-LAX AA PACIFIC
3. LAX-SJU AA NA1
4. SJU-TPA AA NA2
5. TPA-ORD AA NA3
6. ORD-LAX AA NA4
7. LAX-LHR AA ATLANTIC (connecting in LHR)
8. LHR-CAI BA EUR1
9. CAI-LHR BA EUR2 (connecting in LHR)
10. LHR-PRG BA EUR3
11. PRG-BUD SURFACE (surface segment)
12. BUD-LHR BA EUR4
13. LHR-HKG QF (connecting in HKG)
14. HKG-ICN CX ASIA2
15. ICN-NRT JL ASIA3 (connecting in NRT)
16. NRT-HAN JL ASIA4

1) What's the best agency to book this ticket? Does it have to be on AA ticket stock if I want to upgrade using 500 milers and EVIPs? The oneworld online tool will let me book at the price I want ($2631USD + surcharges). But is it better that I book through the AA RTW desk and ask them to price it for sales in Canada?

2) My first travel date is well over one month from today. The oneworld explorer rule sheet says that ticketing must be completed at least 21 days before departure for reservations made 22 or more days before departure. How long will the AA RTW desk hold the reservation before ticketing, and is there any reason why I might want to ticket before getting closer to that 22 day cutoff?

3) With all the recent JAL uncertainty, should I be concerned about booking this trip?

4) More than likely I will change the date but not routing (I don't think I will even any connections to stopovers) for some of these segments. What is the procedure to do so in the middle of the trip? Can any oneworld airline ticketing agent do it, or do they have to contact a special RTW desk? How long does this process take (minutes, hours, days)?