I agree. Only keep indicators that predict in advance where price is going to move. Also, never keep duplicate indicators that both show the exact same thing. I will give an example, my indicator says price is going down, I see price is going down. We then come to a place where if price continues to go down it would invalidate the previous bullish trend. Since the indicator has told me in advance that trend has possibly turned bearish, once price action confirms I would consider going short. I would not think about going long since the indicator told me advance that the probability of a long trade is low.
OMG, if you had knowledge of chart reading, you could get rid of 80% of all those indicators. TA is used to add to your skills of chart reading, but as you can see, it shows lacking of education. Trading Long Term is more of a waiting game of price getting to an area whether trendlines or Bollinger bands then bouncing off to see if area holds price and risking small amount. Perhaps getting some charting books could help you. I would not tell you which indicators to keep, cause if you don't understand price, they won't help you.
And indicators like price don't imply anything, your skills and education of reading charts, give aid to the right of the chart, much study, reading and back testing. Learning more about risk management.