For a whole bunch of reasons, I can't give you a great answer, but given that you have zero answers now, maybe I can help just a little. I was in Ethiopia for about ten weeks in 2005. During that time I fell in love with Ethiopia. I returned to Ethiopia for just a few weeks in 2010 and will go back again as soon as I have a good opportunity.
Ethiopia has so much to offer those who love people, rich culture, coffee, mountains, lakes, wildlife, spicy food, and getting an amazing peak into how people have lived around the world for thousands of years.
The people of Ethiopia love each in the most heart-warming way. People become caring friends almost instantly. Men meet each other and then walk together hand-in-hand. People greet each other with smiles and kisses. It's a beautiful thing.
To be comfortable living in Ethiopia you need to be able to live in the midst of mind-boggling poverty and a lack of modern conveniences. If your people heart is really big, I think you'll love it.
Hope that helps a little!