I’m sure your’re right. Alas, Buenos Aires is located in an appealing time zone.
Why alas? No matter what it's going to be substantially cheaper than Boston. Buenos Aires used to be referred to as the "Paris" of South America in the roaring 1920s. Has the best architecture in South America and if you choose you can live very frugally. There are neighborhoods much, much cheaper than Palermo and it has a more civilized atmosphere than Cuenca or Lake Atitlan.
Palermo is only second to Recoleta in my view. Recoleta is like Beacon Hill of Boston IE upscale.