What if there is no retracement to $39k? and the price of Bitcoin keeps on gaining, you might miss out on accumulating your Bitcoin because you are waiting for a retracement. I could suggest if you have enough money divide it into three parts that you will use to buy the Bitcoin dip, buy when the Bitcoin price is at peaks, and buy Bitcoin with the DCA strategy, instead of waiting for the Bitcoin price retracement and miss out on holding a Bitcoin. Just as @JayJuanGee mentioned to you if you are staying in BTC for 4-10 years it might end up doing you good because the BTC price will be above your buying price in those years.
You can't say ''what if there is no retracement'', because surely there will always be retracement. Following the law of economics when supply exceeds demand there is bound to be retracement. Because there more willing sellers than willing buyers and even @JayJuanGee knows this. Bitcoin is not a stablecoin and saying what if there is no retracement doesn't go well. Yes DCA strategy is very good and I'm not disputing that fact, but what I am saying is I don't accumulate bitcoin due to FOMO because of the knowledge I have gathered on bitcoin investment even though my forum accounts says otherwise. Yes I am into bitcoin as as a long term hodler and I am not disputing the fact that we are yet to see the full potentials in bitcoin investment. So since am going to be around and holding for a long term what's the rush of always buying the top. I feel more comfortable buying when there is a 5 to 10% dip in price from high of the week or month.
No problem with the time or amount that you feel is cool with when you want to buy, but one thing that you should understand is that an investment needs to grow with timeline and not to be stagnant, that shows that you are progressing. This is the reason why the advice of not waiting for some price range before buying is so that, you can keep on increasing your bitcoin portfolio with regular DCA bit by bit and before you know it after a long period of time you will have a significant amount of bitcoin in your portfolio. Instead of sitting down and watching the market come to your own price before buying.
It is better that you accumulate weekly, monthly or quarterly because it might be hard to see the retracement like you said and nobody knows when it will come. Buying bitcoin when the price is high is not FOMO for investors that are using the DCA strategy because they are buying always irrespective of bitcoin price. You should also take note that nobody can predict bitcoin price movement which makes your accumulation strategy not good for newbies who have their bitcoin target and want to achieve it. The joy with investors is when they see their bitcoin portfolio increasing due to their strong commitment and actions on accumulating regular. From the look of things based on your statement, I don't think that you have an investment goal that you want to achieve i.e bitcoin target, it is not to be on a long term investment journey that matters but the ability for you to increase your bitcoin investment portfolio during the period of your bitcoin journey so that you can reach a certain level that you will be happy after you gave re-access your bitcoin portfolio to see the size, maybe it has reached 8x or 10x the original size.
Don't forget that the profit of your investment depends on the size and the timeline. It means that is bitcoin price don't dip till after the ATH, your investment portfolio will just be stagnant. This is a bad strategy for anyone who has just begun his bitcoin journey because you will never grow, and if someone that is new starts accumulating with regular DCA weekly or monthly, within some period of time his investment will be bigger than yours because you feel comfortable buying at your own price. One thing you should know that is called success in investment is not how long that you have been in that investment, but it is how much that you have invested and achieved that makes you successful. buying at the dip is more investors that have reached maybe 70% and above of their bitcoin target.