Hi all,
Been reading this forum for a long time but first time posting here

Due to BAEC rule changing i'm planning my very first DONE3 trip in May. After reading this super helpful thread and some quick research i'm now trying to look into this route, starting from japan:
HND-SIN-oHKG-DOH-oMAD-DOH-oLHR-DOH-LAX-oSFO-oANC-SEA-oJFK-HND
My goal is to maximise total miles travaled so I can try to reach BA gold under the new system. If i did the calculation correctly this route should provide me ~19k new BA TP, only 1k more needed to gold

I tried to validate this route on the xONEx online tool but it told me "You can take only one flight from Alaska to any city in US and one flight to Alaska from any city in US.", and the choose flight button was grayed out.

i'm confused:
1. Is my current route valid? I believe i'm allowed to fly from the mainland to alaska and back. Am i wrong?
2. The online tool refused to price the ticket due to the error above so i guess i have to call someone to issue ticket? I'm now considering JL as I've read in this thread that AA may refuse ticketing if theres no transoceanic flight on AA, or QR may refuse it if theres multiple transfer at DOH, are these still the case?
3. Any suggestions to my current route would be super helpful. It would be great if i can get 1k more new BA TP on this trip

It would be really great if any of my questions could be answered, and thank you all in advance as this thread has already helped me a lot