Currently, Brazil, especially the two cities of your desired travel, have a very, very, very high incidence of COVID. A curfew is on in each of these two cities. My advice to you will be to postpone until the latter part of 2021, or go next year when a modicum of normalcy has occurred.
Brazil is one of my most favorite countries, and when it comes to cities, Rio and Salvador (Bahia) are my two favorite ones. I've been fortunate to have traveled to "Mother Brazil" on eleven different occasions, exploring throughout this largest of countries in South America.