As others said, 1:45 connection should be just fine.

If you can use JL from NRT-LAX, your connection can be 3:00 hours - which will be a little safer and also let you enjoy the lounge a little. Maybe you could purchase it as AA codeshare in which case you'd get the miles as if you were flying AA.

I wouldn't bother with that earlier flight and the resulting ~10 hour connection. Unless you would actually enjoy and prefer leaving the airport and strolling around in the village of Narita. There is a case to be made for that, but not for sitting 8 hours in the airport, no matter how nice the lounge.