If it has to be an aro I would recommend Sutliff's "Barbados Plantation" or their bulk..."Sunset Rum". They are not complex, just a reasonably strong rum and mild vanilla flavor.
Or you could go with a split the difference blend like Lane's HGL or Captian Black, Black Sea or Kramer's Blend for Danny Kay. Neither are true aromatics nor are they true english blends. They are just pleasant, benign, uncomplicated blends.