One has to decide hopw aggressively he wants to trade and how much he wants to risk.....risking too little you make too little but risking too high also you end up making too little ....reward to risk is a bell shaped curve.
If you guys want to scan for any particular query/condition involving any FnO parameters like Price,Volume,OI,Rollover,Basis,IV,HV,Delivery etc. then let me know. I will share the scan results here. I have all these features available, so we can run very comprehensive scans overall - https://www.myfno.com/Features