ChattiFX, is your strategy entirely coded/captured in the EA? If so can't you backtest your different strategy configurations using MT4 backtesting functionality? You could use it to get a better idea of its performance over a much longer period?
Stop-Losses is indeed a very interesting topic... Most people swear by them although I've met a handful of very successful traders that simply don't believe in them. I have a fully automated neural network system that doesn't use stop-losses but this is only after the in-depth analysis I carried out proved out that in pretty much all cases (except for GBP/JPY) stop-losses degrade the performance quite significantly.