Looking for job in HCMC

Just opinion but from what I have been reading for the last few months, since you have your CELTA, you just need to have your docs in order [for aquiring your visa and work permit] and show with your CV and go from school to school, face to face.   With your positive look and your language skills you will get plenty of consideration.  I have a feeling from your post your English is good and your Spanish accent blended. Since you have a place to stay and some time you will find a slot somewhere.  The one thing to be concerned about is showing up after early Nov.  Some good advice I ran across warns of trying to secure a new position once the holiday season hits, not that different than any other country, ...again just from what I have read there is much less demand Dec 1st - Mid Jan.  But I also suspect a number of short-timers bail for Christmas with family and fail to return for classes in Jan....so maybe just maybe you can pick up a slot in you get interviewed before Dec. 1st.  Hope this helps in some small way.

Of course you should consider other jobs but seems like HCMC is an easy landing for English teacher.

Buen Viaje y Buena Suerte