80% development of my own EA is already done. Working profitable since 2003 in backtesting with modelling 99.9%.
From 2008-2019 it makes 10% profit each year, with < 20% drawdowns. No grid, marginal system or many lots - only 1 open position at any time. With detailed Risk- and Moneymanagment and different kind of exit strategies. My EA will survive all market conditions.