So far I've been researching itinerary for our trip to Senegal. I've been reading other blogger's experience in Senegal so now I'm pumped! I'm hoping which ever month we choose to visit, there will be some sort of festival so that we can really experience true culture!
Well, how much is this going to cost? It will vary. But if I were you, I would begin to save cash now! $2k is a start. You will have to consider airfare, lodging, food & tours! 
As you may already know, a passport required! Visas are not required for Americans for a stay up to 3 months!
Oh! The yellow fever vaccination is required! The malaria prophylactics  are recommended.
Right now, I have 6 possible clients (friends) who would like to explore Senegal!