If you go for quick scalps in a winning system, this is what happens:
1. 70% avg winners yields about equal avg win vs avg loss
2. 80% avg winners yields 2x the avg loss to the avg win
3. For those stops you don't adhere to the above, giving you an out-sized loss, you'll need to make up for it with a larger trend trade gain.
In this market, it's no big deal to take 1 NQ contract and make $500-$1500 a day doing this. But it will tend to wear on your nerves so it's best to do it in the first 2 hours and stop.
I'd recommend trading this on a 5 or 10 second chart, using the 1 min and 5 min charts as guides for overall S/R and trendiness. Why? When you can make or lose $200 in 15 seconds on 1 contract NQ, you can better measure your risk vs reward in real-time at these timeframe levels.