If you came here for advice, what do you want from those here that try to help? If you want to be "hard-headed" and "ignore the advice" and "take everything" you hear "with a grain of salt," what's the point, other than to start an argument?
prettymuch this. Feel free to do things the way you insist on doing them. You are like the guy banging nails into his wall with a loaded revolver. When you shoot yourself in the foot it isn't my problem. Also, when you run through a ton of fish because what you want to do is obviously way more important than what you should do, I don't want to hear it.
Quite frankly, you come off as someone that knows there is a better way to do things, but you want to do it "your way" just to try to piss people off and/or fluff your ego. Essentially, you come off as ignorant, and proud of this ignorance. IMHO there is nothing worse in this world than people that are offered good knowledge and reject it because it isn't something they thought of initially. Guess what, there are people here with more experience than you running amazing looking tanks. These same people can run the same tank and can keep fish alive way beyond their "average" lifespans by just doing their homework and some basic setup.
My signature may not show it (and my post count was reset a few years ago from my previous amount of over 3K) But I have previously operated a large scale breeding operation as a business and I have bred over 75 varieties of fish. A tiny bit of effort when you are first setting up your tank will pay huge dividends. Hell, for example, my mom has 3 high-fin black tetras that turn 10 years old this year. Not kidding. Normal life expectancy of 5-6 years. All because she did the right things in the bginning and got into the habit of doing things right. This isn't even talking about the 7 year old otto cat she has either, or her 7 year old albino cory.
Go nuts, go buy a dozen baby oscars and a dozen rafaels, I am sure some of them will survive awhile, and they will survive fine in a tea-colored, uncycled trainwreck. OR just start dumping chlorine bleach in your tank, I am sure the fish will adapt.