You will get many responses here. Most will try and steer you away from it especially for a first timer but the first thing I just wanted to point out is that most plants will not tolerate the temps the discus need. Depending on your scape already it may not even be a possibility to begin with. If the plants you have won't tolerate 82-84 degrees it won't work regardless of other advice.
Which is more important planted scape or discus?