Discus in a planted tank not only look great, but can be kept successfully if you give them that extra care and attention needed to maintain very good water conditions.
I suggest Josh, that you get a tank of at least 60 gals or larger, to accommodate 6 discus of a reasonable size - I recommend 4" fish if your wallet permits.
For ease of maintaining tank cleanliness, I suggest you consider using pool filter sand, no more than 3" deep, and using root tab ferts (along with regular moderate dosing of water column dry or liquid ferts).
Set up your tank with the substrate & plants right from the start, and allow the plants at least 4 to 6 weeks of growing/establishment time, while your tank is cycling, before getting the discus. Do a fishless cycle, using bottled ammonia.
Avoid heavily planting in order to give your fish some swimmimg room and to permit you to maintain a good vacuuming/cleansing routine. Keep things simple, and at least for the first few months, keep it low-tech and stay away from using pressurized CO2.
And keep in mind, you will need to maintain a water change routine of at least twice a week, 3 X a week would be better, of 50% or more.
Plants that do well in low-tech and at the higher discus temps include Amazon swords, Anubias, Java Ferns, Crypts, Hygrophilas, Bacopas, Rotalas, Lotuses, some Ludwigias, or even some Vals & Sags.
Get your discus only from a well-known, experienced, reputable and reliable source to ensure you're getting, good quality, healthy fish.
Best of luck to you, and don't hesitate to contact me if I can be of any further assistance as you set up.
Here's my planted discus tank for you to have a gander at:
http://s1105.photobucket.com/albums/h357/discuspaul/lolliblues2