Responses have been trickling in, and I am already meeting some interesting people online... looking forward to making friends IRL when we get there.
Another ad I posted called for interested parents to contact me so that we could get our children together for a weekly art class. Home schooling is extremely rare in Argentina, however, so I am skeptical that such a class will materialize anytime soon. Nevertheless, I have some leads from a pioneer who traveled to BA last year with her family, and found some good spots for children not attending a local school to make friends.
The countdown is on... 7 more days!