Not sure if it’s the same everywhere, but in the country I’m from if you’ve been missing for 7 years they declare you legally dead, so if you have the ability to live off the radar after faking your own death anyway, I think the simplest way would probably be to just vanish and let the process run its course. Then it’d be all official anyway. Not sure what you’d do about a new identity and stuff though.
Not sure if it’s the same everywhere, but in the country I’m from if you’ve been missing for 7 years they declare you legally dead, so if you have the ability to live off the radar after faking your own death anyway, I think the simplest way would probably be to just vanish and let the process run its course. Then it’d be all official anyway. Not sure what you’d do about a new identity and stuff though.