Did you consider a 15 to 20 yr old Cessna Caravan or Cessna Grand Caravan?
It truly is a "do anything" and "go anywhere" kind of aeroplane.
Very, very true, but the OP wants to recoup some money through leaseback or rental. Unless he strikes a deal with someone who does FEDEX feeder flying, this isn't going to work. And even if such a deal could be done, the a/c then wouldn't be available for multi-day pleasure trips as it would be plying the night skies every night of the year.