Continuation signal following large retracement

Here is a H4 chart showing a potential area that EURUSD will continue upwards. A Bullish H4 candle is bouncing off what could be a potential trendline which is also at the precise point of the Daily 20 sma.

Bought here you could you gain a large reward/risk but would you wait for further confirmation? This confirmation may come in the form of further H4 candles forming a double bottom or higher lows and maybe higher highs. This may reduce your reward but how strong of a signal do you wait for?

This question is aimed generally at such a scenario, not just at this EURUSD setup that is occurring now.

You absolutely can sacrifice position for confirmation. You also can sacrifice confirmation for position.
These are emotional decisions and not technical ones. Therefore, the correct answer is different for each person.

Good answer..so long as we know that both methods of choosing the signals work over the long run.