Stochastic RSI is not that accurate based on what I experienced while using it both in lower and higher time frames and I prefer the good old traditional RSI for scalping, in addition to that I can recommend you to use Squeeze momentum(by lazybear) as well which works kind of like RSI, these two indicators should be more than enough in most cases and it's better to no overcomplicate TA too much and keep it simple as much as you can.