Cycling in NE Brazil

I was born and raised in Fortaleza, state of Ceara, northeast Brazil. I haven't been back in over 30 years, but I am now starting to make plans to spend November 2012 bicycling to a number of places throughout the state. I see that there are no WS hosts in the whole state, so I guess I won't be staying with any of you, but I am hoping that some of you might have cycled there and can give me some ideas.

I am trying to figure out a good way of navigating the smaller roads in some of the more remote areas. I have been spoiled in the USA with Google Maps and my iPhone, but I rather doubt that it will be of much use there, especially in the interior. I suppose a GPS would work, but it is hard to tell if any of them have much beyond Rio, Sao Paulo, etc. Perhaps a paper map would be best? Anything like the Delorme Gazetteers there?

Thanks in advance!
David Lieb