I think done right, this tank would be great with discuss. You definitely either need some good wood, or a really tall plant like vals.
If you are considering lilly pipes, check out the thread where aquaticmagic gave them away, he is offering them for sale cheap to members here too, and the deal is outstanding. I am very happy with aquaticmagics service in the past.
I think your discus with some schooling fish would be awesome. I think your rock work is just too small for a tank these proportions. You might find that this depth is going to be a challenge for lighting the substrate level plants, too.