If I hear to "scatter the ashes" I think this will be very problematic in a G109.
It is not possible to open the gullwing type doors in flight or to fly the airplane without doors because you lose the airflow on the T-tail elevator.
So you can only use the the small sail plane like ventilation windows in the plexiglas doors.
Edit: There are some starting accidents with G109b and not correct closed doors.