Soheilsb,
Sorry I forgot to mention that I will be trading a mini account. so that would be risking no more than $10/trade. Though this is miniscule, I'm trading a
demo account with $1000 to make everything as close to the real thing as possible. Right now I'm trying to make it where every detail during my trading time is the same, so that I can spot reasons why I made losing trades quickly and remedy them accordingly. So, with that said, I will be risking $10 hoping to make $30. That may be too small, but I'm willing to blow a couple of demo accounts making changes to the strategy in order find a profitable strategy that works with my "scalping" trades.
Though this is beside the point, In your experience, how often have you had to scrap a system because it was no longer profitable in the past year or two?
thanks