I would say if you are into DCA then first of all choice of coin must be good rather then any of shitcoins in the market and have plans for long term not say 2-3 months of DCA strategy as price fluctuations would not give you any much profit.So for long term you can have more coins at an average price lower then the current rates and will have more profits.So make sure about this and you will gain profits through your DCA investment plans.