The only way you are going to arrive to a number you can trust in real time is after you backtest. Then you will have the stats for your system. For example if you know that you can easily have 4 losers in a row and still emerge above water during that week you will not get all stressed out when you place that 5th trade. But in order to TRUST your system you will need to test it. Without testing is all guessing.
Can you post the charts of the intervals you use to take the trades, from the 1 min perspective, some of your charts entries don't make any sense.