I know you probably read this over and over again and you seem more Altcoin oriented but why do you not Dollar Cost Average a Cryptocurrency with a stable Price that at least has a history of not dying in the last 5 years or more?
With this view from you, that I agree with you on this, Bitcoin is the best choice.If people choose altcoins, they will fall to most of failed altcoins which are degen altcoin type as described in this insightful article.
The two types of altcoins: Oscillators and Degenerators, an investor's view.
Bitcoin is an oscillator cryptocurrency and its general trend is up, which is clearly visible in this chart.
https://charts.bitbo.io/yearly-candles/