trip to Omo Valley (Addis Ababa)

Hi!
My friend and I will be in Ethiopia from 20th October to 6th November and we wish to visit the Omo Valley during that time. We're looking for anybody who'd be interested to join us for the trip and spread the cost. We're still not sure how long we'll want to stay there but we think Protected content probably.

We would like to see as much as we can during this time (Lalibela, …..etc. ?), get know people and culture, visit interesting places so will be happy for any help or contact or advice.
Cheers,