I've been offered a unique opportunity to fly a contract in Africa. Its a 1-2 month position flying a small cessna doing survey and wildlife management. All expenses are paid for, room board and travel are all covered. So anything I ask for in salary goes into my pocket. They have asked for my rate.

I have no idea how much to ask for as a daily or total contract rate. Can anyone advise me on what I should be asking for? I am in between jobs so the timing is good for a short term project. There is also an opportunity for this to turn into a long term thing.