I'm doing the same, ie specializing in stocks with
High ATM IV options. Just finished the tests/research etc, and beginning to apply in practice. Yes, 30+% per month is indeed possible.
I don't have long term test results, but I know it works, so no need to waste more time in lengthy tests, since getting historic options data for backtesting is also very costly.
My advice: just do it, and later, when you from it got somewhat rich, order your employees to do the dirty work of backtesting...
IMO, the biggest risk is the "Early Assigment risk" which means your position will be closed, initiated by the counterparty. Applies to all US equity options (as these are
American-style).