Overall you give good advice, the only thing I would add is that DCA is also good for people who don't have a big income and therefore can only invest what they save from their paycheck. For most salaried people. I am not a newbie and I do it.
Some investors may speculate and some can think that the price of bitcoin may still decrease, they can because of that not invest at once but start to DCA in a way that if their analysis or speculation is favoured, they will be able to buy more at a lower prices. Some investors will even buy more when the price of bitcoin becomes lower and some investors will invest all at once after many weeks of DCA when the price get to a lower targeted price.
Very well said Charles, I have used such formula in my bitcoin buying process sometimes a d it do work for me, in the sense that I try not to put everything down in the market at once, and once I notice that if I bought bitcoin, I always give at least a week interval before I visit to the exchange again to know if the price decrease further so that I can buy more.
Or if my investment in the previous buy have yield profits, in the form of price increase after my bitcoin purchase, this most times work for me alot most especially when I have a cash availability of up to $5k to put into bitcoin.