Juan, trying to apply to AA without even a work permit or green card is a little pretentious, you should also know by now what kind of operation Avianca does. If you fly N registration aircraft for a foreign carrier you are under 129 Which is not exactly 121, very different.
Even with some PIC turbine time your best route is (once you get green card, and FAA ATP), to go the regional or LCC route and build some 121 time. PIC will help once you obtain all of the above. Not to mention a 4 year US accredited college degree (highly recommended).
I recommend you get in touch with your buddies ex-Ava who work in the US to get a better insight, which by the way will help you if you are ACDAC and supported the strike last year, otherwise you can forget about it.
Good luck, feel free to PM me any time...