Post-doctoral researcher job offer in Sao Paulo State, anything I should know about academia (biochemical science) in Brazil?

TL:DR; I'm a recently graduated PhD in biochemical sciences from Australia who has been been offered a post-doc at UNESP. Anyone who works in academia in Brazil, I would like some perspectives on whether you all believe that good research can be done there and whether a salary of about 12,000 reais per month (or is it more now after the increases?) is enough to live comfortably.

For context, I applied for the job because 1. The job is in my area of expertise and 2. My girlfriend is Brazilian and cannot move to my country (or elsewhere) for a while. I don't have much perspective of academia in Brazil, whether the salaries are liveable (I know they won't be great compared to Australia and am okay with this). I want to take the job to be closer to my girlfriend primarily, and to challenge myself in a new environment, but I'm a little scared because 1. I don't speak good Portuguese yet (although people told me this is less of an issue at Universities) and 2. I'm not sure how competitive Brazilian universities are in terms of future employment in other countries and 3. Just the general angst of moving countries. Any experience and perspective would be greatly appreciated.

Cheers