Buy when there's an opportunity when the market dips or corrects and sell out if it do really be able to hit up your selling point
That is not a good strategy, your strategy speak more of a trader or otherwise a gambler and that could be misleeding. Bitcoin investment is not like gambling. Those that followed same pattern or procedures got disappointed along the line. There is no success in trading for a short period of time. Long term investment through DCA is the goal. Your selling point should be when you have met your target after a long term of HODLing. By then you will start thinking of selling. HODLing for long with backup discretion fund is the key. And invest the amount you can comfortably spend without overdoing it rather than some sort of gambling.
In fact, in my opinion it is a buy dip scheme not to DCA and it cannot be equated because in the end buying buy dips definitely tends to be active because what is done is to buy in every decline and momentum they get and will definitely be different from the DCA scheme which in this case is more passive because it only buys consistently or gradually in regardless of price fluctuations that occur.
In addition, Selling if it really increases your selling value indirectly this is also ultimately mixed into trading in the end especially if the time period is very short so that it is not included in the Investment anymore especially with the DCA scheme because buying at a low price and selling back after making a profit is certainly not an investment for a long period of time but trading that utilizes momentum with the Buy Dip scheme.
Even if it is up to you in the end but I think it is a little difficult to mix all the elements together because in the end it is DCA. Buy Dip and being a trader also cannot be used as a plan (for the whole) but it will be different if you choose one of them. at least it makes you not become confused about what you are doing whether doing DCA, Buy Dip or as a trader.