Keeping discus in a low tech community tank is not at all difficult, if you get reasonably good-sized discus to begin with, carefully select their tankmates which are compatable, non-aggressive, slow-moving fish that can handle the higher discus temps, and don't grow too large.
And you need to maintain a good tank cleansing routine, ensure you're maintaining good water quality and conditions and do large, frequent water changes.
Many plants can do well in the higher discus temps too - in the 82-83 F range.
I could name many varieties if you wish.
It might help you to have a read of my 'Beginner's Guide to Getting Started with Discus' - click on the first/only Sticky in the 'Fish' section here.
I've been keeping discus in planted, low-tech community tanks for years - have a look at a couple of my albums:
I'd be glad to help you out in any way I can - don't hesitate to PM me if you have any questions.
Best of luck to you,