We Catholics pray for the dead to become redeemed and go to heaven. Carrying out someone’s wishes seems pretty simple.
In Christ alone we are saved.
Sounds like your friends heart was full repentance and restitution. Christ like qualities.
If the opportunity for his direct blessings of folks in his past has passed, continue to focus us on those Christ like qualities when you decide on what to do with the money. Most importantly pray to God for wisdom in your decisions and to make those decisions clear for you.
That is not Biblical; I’m sorry.