The amount of DCA assets depends on the individual investing. You can purchase Bitcoin in different steps to make long term DCA. The right way to trade in Bitcoin is to divide yourself into several parts. So that you can buy when the bitcoin market is low and sell it at high speed or hold long term. Following these methods is called DCA, there is very less chance of loss if you invest in DCA method. And if you invest directly the chances of loss are high. Hence following DCA is the main sign of an ideal investor.