I will just wish you a "good" outcome with this. What to say? I'm sure that if you do this you will do it well, but if it doesn't come out well, so be it. It's not like you owe him anything anyhow what with the evil he brought onto your family.
You have our thoughts and concern leading up to this and our support regardless of how it "turns out"
Lots of love,
"Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting 'Holy Shit! What a ride!'" ~Hunter S. Thompson