Never do such trades without safety.
"buy 1 lot 40 strike call @4.8
sell 2 lot 45 strike call @2.75
SL 50 in cash"
This is a very good strategy and no risk on downside of the stock.
But remember to buy one 47.5 CE/50 CE at the lowest available price.
Be very careful, FIIs can play anyway and JP movements will be in double digit percentages some days.