Don't. I have seen FEW scalpers make consistent LONGterm profits. You pay a heavy penalty getting in and out of a position, whether forex, futures, etc. (commission, slippage/pips, errors). Learn to trade on a much longer time scale, and this penalty will be reduced strongly.
Can't agree with that, a well tuned short-term trading strategy can produce just as good if not better returns than a longer-term one. Stops are tighter therefore profits percentages increase with increased leverage. The trade-off is intraday noise but that can be filtered out to a degree. Fundamentals drive the market more than anything else and they change from day to day, look at dollar sentiment this past couple of months, it's been a roller-coaster.
I used to use a high risk-reward ratio (roughly 3:1) as you mentioned in your strategy here; take it from me it doesn't work. You're better off trading from midnight to 10 a.m. CST. That's when all the real moves happen, and that's when you can be profitable AND accurate with a lower risk-reward ratio, something more like 1:3 or 1:4. P.S. I find all the indicators in the world don't mean diddly squat next to support and resistance. The RSI is pretty good for picking counter trend scalps during low volatility but that's about it. P.P.S. Sell some dollars!
Most of the scalpers and scalping systems I see have pathetic statistics, even if "profitable." They bear outsized drawdowns to lock in some of the profits, and tend to not do well over the long haul. Obviously, every strategy has some people who make money. But scalping is not where I would send a newer trader. The failure rate is fierce.
If you have a 5 pip win and a 10 pip stop and a 90% win ratio, then you are fine. If you end up converting small losses into big losses, you are revenge trading. Psychological issues are one of the main reasons there are not more traders.