You are on point with you analysis but for me personally I do more research around the project to see if there is something big happening soon. It proved for me to be better then only to focus on charts. As for leverage trading I do that at x10 and I always put a stop loss at -1.5% and take profits around 2% or more it depends of situation. For leverage I focus more on charts but usually coins track BTC so you can go by that if you don't want to go any deeper in it.
Stop loss at 15% of your bankroll? Very dangerous, if only for 2% of profits? I mean, with the kind of volatility we see that stop loss is SO easy to hit at 10x leverage.
Big moves seldom effect the way we think too. See stimulus checks on weekend? then BTC went down. No news now and it's back up today. Swings and volatility with no reason or no immediate impact.