Everything about this is wrong, he still needs his son means he have no confidence in this investment, why try to force anyone to invest in Bitcoin? because he has the money? If something happens you will be blame.
This person need to learn about Bitcoin and other risks that are involved, if the bear market takes longer than we expect what do you think will happen? I don't see any confidence or trust in Bitcoin reading the texts between you two.
I only see someone investing on Bitcoin because he is been told to do so.