Hello Jon,
Welcome to SD. If you get a chance to read some of the "stickies" in the beginners section, you can gain a lot of knowledge in setting up and maintaining your first discus tank.
The only advice I would offer right now is, discus prefer groups of 5 or more (shoaling fish). You can growout some juvies in a 50 gal tank but for discus, bigger tanks are better, like a 75 gal to start with.
If you can't find the answers to any of your questions, always feel free to ask.