are you relatively new to fish keeping?
Discus in my book are one of the most beautiful of the freshwater tropical fishes.
But as mentioned, may become overwhelming for most hobby keepers.
they do tend to require clean water=lots of WC(water changes)
I was a little put back by the "I wouldn't keep Discus fish in a community tank." statement.
discus are relatively slow movers and might not fare well in a tank with agressive feeders like danios(very active, very hungry)
but I think if you choose the fish wisely you can keep them in a community tank.
If you decide to go with angels as the center piece fish..skip the neon tetras.
as mentioned..neon tetras=food for angels
again choose your fish wisely..and go for the bigger tetras.
good luck