The best bet is to go to the AMEX booking website and start plugging in dates. You can book Asiana via SPG for 95k points, which is a very good airline and a good route. Asiana connections usually require ~12 hours layovers in ICN. This is not necessarily a bad thing, as it gives you plenty of time to take a tour of the city and/or get some sleep in a hotel. Asiana usually covers one stay in a hotel per booking on these if the shortest layover is 8+ hours. You can use AA miles to book a flight from SAN via Tokyo on JAL, which would probably be one of the most pleasant options. There are many more options from LAX, but award availability at such a short notice is usually very poor. Going via TIJ would probably require a trip to MEX, which is way out of the way.

TPAC flights are incredibly dirt cheap right now, so it is not a great use of miles unless you are going for J/F. However, since you are in a hurry, the last minute airfares are 3x as much as the deals. I would definitely avoid PAL if possible unless you get a good deal on J.