I assure you they will not spend the amount of money required without determining what the specific area they are in holds. They may not get to do as many areas as they would like but they will determine what they in the areas they do drill.
Frankly with the cost of deepwater drilling rig where it is, I would suspect that the engineers that make the drilling location determination will focus on the areas they feel they will get the most bang for their buck. From everything we have heard that should be Zone 2 & 4.
I would be surprised if the 10 well program deviated much from 2 to 3 specific areas.