I would get a few Plecos. Sail fin or more colorful small ones- for the bottom. Definatley Corys or Synos, please Lupin and get a loach ;^)
Middle stratus- are you a big fish lover(oscars/altum angels), a colorful fish lover(fancy gold fish/discus/platies/mollies/guppies/glofish), or a busy body(danios/barbs/tetras)?
Top- upside down catfish, female bettas? Make sure you plant appropriately. I would go with Giant Vals, and float some hornwart.
Natural gravel with driftwood might look good?