Investing $50k into bitcoin over 8 years should totally be within reach of some one who currently might be able to invest around $71 per week with perhaps some anticipation that over the coming 8 years his disposable income will increase and he would be able to invest 10% more into bitcoin each year. It would look something like this.

Of course over an 8 year period of time, a person could have a regular DCA amount,
but also there might be times in which cashflow is better and/or times when cashflow is worse.Surely the times when the cashflow are better, I think there is need to accumulate aggressively in regards to increase ones portfolio. because having an 8year plan of $50k investment required facilitating the accumulation process since bitcoin is volatile, because if a person was not able to increase his accumulation in the 8years intervals, he might end up buying lesser amount of bitcoin. so sometimes the fuck you status could be arranged in somewhat a way that when there is an increase in cashflow, the DCA should be increased to buy more during its early stage when it's less than increasing the weekly DCA when the price of bitcoin is high. It is important to leverage on bitcoin during its early stage because 8 year ls certainly a long time for BTC to make huge changes.
What am trying to say in essence is that if there is an increase in cash flow maybe during the beginning of the fuck you status like the 2024 of $71 DCA. Surely the table maybe an inverse of maybe $152.19 DCA per week in the early days , which means the bigger investment in a weekly. And if the cashflow is has less then we can begin to invest in a way that it will balance with our current status of discretion.
I understand the point you are trying to make but volatility of bitcoin has nothing to do with an accumulator because his goal is focus on having a big bag of bitcoin in his possession so whether the price of bitcoin skyrockets or falls it's not a concern to him at all. For me, someone with 8 year plan of accumulation seems too sudden unless for someone who would just want to recap and analyze his progress within that interval of time and not give that time frame just because of the idea they can sell by then. There's no need for aggressive accumulation if your cash flow increases, perhaps you can just increase your DCA amount a little then the remaining funds can be added to your reserved funds, the need for this is so that in a case of DIP you can acquire more bitcoins with your reserved funds. Someone who has a time frame target of their investment should be able to know how to apply various strategies when the need arises so that they don't miss some opportunities that may come along line.