DCA strategy in investing and DCA strategy in short-term trading are different.
It's better to make a good profit and then cut your losses from that profit. It's easy in your way of thinking.
For example:
1) Too risky: 1/4 of the profit
2) More safety: 0.25-0.5/4 of the profit
The standard stop-loss in the DCA trade, in our experience, should be at the resistance below the high timeframe resistance levels. Most of the time a tight stop-loss will be hit and the price will pull back.