dude dont upgrade. wait for a few more months. p67 mobo prices are way inflated.. let the z68 chipset come into india. its more VFM than the p67. also bulldozer from AMD comes out next month. The sandy bridge is also priced very high at the moment. let it settle.
The q6600 is a great proccy. it wont bottleneck u. wait nd buy. why buy a sandy now to realize ivy bridge would have been a better investment. relax for 3-4 months more. u waited this long