There are other websites which have the option data and you can backtest your strategies. However I have the required data and knowledge and to the same for you. Since this is a manual process my quote will be a little higher.
I have experiance in strangle straddle strategies on bank nifty. I played only intra day. Sometimes positional with max 1% loss on total capital if market goes against u.
Been trading a lot of options since 2016, so the experience counts.
Would be interested to help you in the strategies as myself have made many of them.
Looking forward to work with you.