MFtraveler

Hi we are currently planning a trip and looking at booking a one-way ticket between SFO > LAX on Alaska Airlines that would land in Terminal 6 at 5:58pm on 11/21. We'd then need to get to Terminal B for an American Airlines flight to LHR that departs at 7:45pm. We are not checking any luggage. (For context, we are piecing together this itinerary to use our miles and there is no option to book this on the same itinerary.)

Questions as we are not familiar with LAX:

• Barring any issues, should the 1hr 47min layover allow us enough time to get from T6 to TBIT? We will be seated in the front of the plane on our flight between SFO > LAX, so should be able to deplane relatively quickly.
• Does anyone know if we can get our boarding pass for our international flight from LAX > LHR at the gate (or AA lounge) or would we be required to exit security and go to the AA ticket counter to do so? It's my understanding you cannot get a mobile boarding pass for international flights on AA but I could be incorrect.
• We also have an option of booking a flight between LAX > LHR that departs at 8:50pm which would allow us 2hr 45m layover, which we are considering just to allow more time in case there are any issues with our first flight

Thanks in advance for your help!