I urge you to invest whatever more you think is prudent NOW.

There is a plausible case to be made for bitcoin maxing out above $1M. A thousand fold increase from here is possible, but according to logistic models, next year the remaining increase will be only one hundred fold, .. and so forth.

Furthermore, my own research on bitcoin holdings over time, suggests that when holders realize 100-1000x return on their mining/investment, they cash out.