I think India should play with 5 main bowlers because if India just plays with 4 main bowlers and one of them gets injured India is left with only 3 main strike bowlers as happened in the last test match.Nehra has been prone to injuries and if he gets injured during the second test match India will again be left with 3 main bowlers. India was lucky that they could bowl an opposition out with only 3 bowlers in the last test but it may not happen every time.
I don't know who is taken this funny decision because after bowled 10 or 15 overs he will tell I am having some problem so better try for the another bowler. Selection committee having options also ( Avishkar Salvi or Amit Bhandari ).