I thought your goal was "Will be using PC for Moderate gaming : FPS & RPG's. Crysis, CoD, PoP etc 720P". If that's still true, I don't see why you're so set on the 3570K. If you really can jump the budget by another 10k, then you should spend that on the GPU instead of trying to get an overclockable CPU.
The GPU will increase your gaming performance by about 10 times, while an overclockable CPU would maybe get you a 1.5 times improvement. So you should get my build as I specified but add the 7770 GHz edition for Rs. 9.6K and call it a day.
In terms of future proofing?