I have been breeding and raising discus for over 25 years both hear and over seas, i have breed at least 1500 discus from four pairs in the last five years, i have 18 at the moment, three breeding pairs that i am bring on, still a bit young yet, but my point is that if you read up and vist the different sites that are a round you will find that discus are very easy to look after, good filtration good food and veriaty clean water and good tank maintainance is all you need, same as any fish.
When i buy new fish that are imported i take some care to try and match the water from where they came from, most come from singapore, its very easy to find out the ph etc of the web and the poeple who breed there, i agree that you should not play with the ph its better to have it stable not up and down, of cause chch water is not treated and is very good for drinking so we have a head start.I would not wait six months for a tank to cycle that is crazy, bk has water form other tanks and media as well, that should be more than enough.
I will repeat discus are very easy fish to look after.