This again.
Currently - AA SWU advance inventory on international longhauls is very difficult (but not impossible) to find. Attempting to book a trip solely based on SWU availability in advance is likely to be a very frustrating experience. On the other hand: booking a trip someplace you want or need to go and then clearing a SWU off a waitlist is entirely possible.
Suggest OP read one of the other threads on this topic, starting with:
https://www.flyertalk.com/forum/amer...thread-39.html