No I don't. I have been there though, I spent two months trekking around brazil and like you, I fell in love. I can not wait to go back!
Prices are ridiculous everywhere during carnival but I have heard stories of people finding places further out for cheap. Or maybe try a smaller city. It will certainly be a different vibe than salvador or rio but it will still be amazing!
Adventure needs to be as much about discovering yourself as it is about discovering the world.