I would keep it to small schooling fish. The tank, and the AQUASCAPE should be the focus it is hawt. The discus would stand out to much IMO. 

So, the meet went well? How many people made it? I really wanted to go, but I had family in town.
I think Altums would look great in there. That or wild type discus.
I think Discus make a good planted tank look unnatural. The colors of the Discus are too bright and they look out of place.
Altums may look better.
Looking sweet. Personally, I've got a wide variety in my 100 and will eventually be getting either silver or half black angels as the centerpiece. Just posted this if you want a current look. http://www.youtube.com/watch?v=FKPAOD2d9k8