I vote for Sreesanth. He is a maverick, but he has been very good in tests. It will be a very aggressive pack to have Zaheer, Ishant and Sree bowling in tandem on pitches abroad. Sree's only problem is his behavior but as long as he doesnt break any law, he should be played. And he seems to have calmed down quite a lot (especially after the IPL thing).
Sree should be the permanent third seamer. Have Irfan and Munaf as backup in case these three break up. And we should be fine. Not sure when we will blood Yomahesh who could be our future.