DCA straight way is still gonna work for the upcoming 5 years let me explain if an investment of $30M or Less like $5M is made with that being said then a Holding gap from that to next Halving will be like 2 to 3 years after that Halving the Block will 1.5 Rewarding then BTC Price to Cost of Mining Block will decide the price. That will be easily arround $1M.

You can calculate your profits there these Strategies are good for the Countries Under High Debits to pay.

Not Day Dreaming the  Realized value of BTC is the peoof as you can see the chart currently the realized value is areound 30k and ATH is 69k but  after 2 Halvings due to Realized value and ATH will be close to the ATH.