Sunil,
a) What is the lot size of Idea and how much money is needed to buy one lot of futures ? Same for Infy.
b) How about booking profits early (say with a TSL of 83.xx) buying options for the rest of the target.
c) If some downside movement is seen (as today it came down), will it be prudent to hedge it with puts ?? I mean, despite accurate analysis, the markets can give spikes either way taking out our stoplosses. How much would the puts cost? Maybe the profits from the futures will take care of that investment and it's early in a very long series, so puts won't be zero too soon.