Like anything, if they can sell you the merchandising rap they've done their job to stay in business. If you must have it say ADA on it then I can't help you there! lol
I think most of their accessory stuff is nonsense geared towards geeks who must have all the latest ADA gadgetry and paraphernalia. Give the plants half a chance and they'll grow. It's not rocket science as they seem to imply. Aquatics are quite easy if their requirements are met. Keeping them full of nutrients is the #1 difficulty! 1/4 of a Jobes fern & palm stick are great though to amend a decent soil. I liked Shultz APS best because it was readily available in the pond dept at Home Depot. It's very light so I added pea gravel to it to help hold down some of the more buoyant plants and also mix up the look of the gravel bed. Almost every type of plant (terrestrial or aquatic) loves APS which is a baked clay that does not break down underwater or cloud the water upon uprooting and replanting the rapid growers.
Too avoid plant melt downs and vicious algae blooms when using high amounts of light you have to do everything correct from the start not add to your project piecemeal. At day one you must use good R/O water, a lot of light (240 watts over a 75 gallon or around 3+ watts per gallon) and
a lot of plants right from the start. The plants are the buffer that stabilizes the new ecosystem. You add the Co2 after the plants have settled in for a week or two. After another week of the Co2 on you can test for Iron and other water params to see what you need to add. I used 1 teaspoon of Iron (Fe) daily and 1 teaspoon of all purpose Yamato Green weekly which had all sorts of trace elements in it. These tanks feature very few fish, added later after seeding with fish food or something to get the nitrogen cycle going. The aesthetics is all personal, set it up however you like. Amanos designs are intended to be like a recreation of wilderness landscape with aquatic plants, rocks and driftwood. Take a photo of the woods, mountain range or something and try to replicate it using aquatic plants and you are on the right track to your own "pseudo-Amano". However, like a bonsai they are never "done" as the tanks evolve and the plants grow in they continue create new and unexpected scenes.
But if wires are your worry you can simply hide the filter stem behind driftwood or other tank elements. I had only a power filter intake and airline glued to it (a total tank intrusion of 1" x 12" maybe?) very simple to hide. The jug for CO2 goes under the tank stand. I never used heaters after I had one malfunction and boiled my tank of Bolivian Ram Cichlids and Banjo catfish. Besides using enough lamps to grow plants well heats up the water plenty.
Since the power filter is empty perhaps the heater could go in there if you really needed one. A proper nature aquarium uses no filtration other than natural processes, the power filter is there simply to gently circulate the water and dissolve the Co2.
I just thought of it, you can likely get a glass tube for a power filter intake and the underwater section of the Co2 stem from a science supply warehouse if you know the diameters you need.