A ten gallon is fine, IF, as previously stated - your fish will fit into it. For cycling, you need to cycle it just the same as any other tank you might invest in. Whether you decide to add live rock or not is up to you, but I would suggest some substrate and some form of refuge for the fish - you can even use fake coral or rocks - which by the way are a lot easier to clean after medicating, and still have a pleasing look to the eye. I am not sure why BIGgourami is set against lights in a QT tank (??). Personally, I see no adverse reaction to them, and actually, adjusting them to a set lighting schedule helps them acclimate to new enviroments. When the fish are first added, it is best to leave only natural light for a day, then start turning tank lights on in small time frames, gradually building up to that of the schedule of your show tank you mentioned. You can start with two hours the first day, and work up by 1/2 hour to an hour every other day. Offering vitamin rich foods are best, and Garlic Guard, which someone mentioned is typically a great product to re-start the metobolic system in fish who've been stressed to the point of fasting. As far as medicating goes, I would start with the lowest first, like say Melafix, though I would stay as far away from copper as possible. Copper is right up there in toxisity as say Malachite Green. These are heavy duty meds that are generally not necessary, if the issue is caught early on. Good water, good food, and time to adjust is usually all it takes. Should they be infested/infected, then address the situation according to the problem.. I.E - Identify the bacteria/fungus/parasite/etc. before medicating. Anticipate a good 30 days QT before they should be added to the new tank, and longer if they require medicinal treatments. Just my 2 cents worth.