Honestly I will diversify. Since we are talking about established financial status through Bitcoin alone here, it would be best to add more investment besides Bitcoin.
That's right, starting with an emergency fund of between 3 and 6 months of saved expenses in local currency, and apart from bitcoin some other investment. Focusing your whole life on bitcoin is fine if you are Michael Saylor and the like, but not for the average citizen.
Congratulations to the OP on his fatherhood, by the way.