It depends what you already have. And what do you mean by top notch? Do you mean best tank, or state of the art equipment. The better the equipment, the easier it will be to have a nicer tank. That would be high light, high tech. The cheaper side would be low light, low tech. The downside is, your plant choice is limited, and you have have to be more careful.
One important thing: start a comprehensive fertilizing regime. Look up "EI dosing." or if you are not good with diy, then try using Seachem's Flourish fertilizers. Fertlizing is necessary, and too much won't hurt, so it is rather easy, and cheap.
Also, get a good substrate.
Another important thing: The more light you have, the more potential your plants have to grow faster. The faster your plants grow, the less algae you will suffer from. HOWEVER, if you have not enough co2 or ferts and too much light, your plants will not grow fast enough, and the high light will let algae take over.
So basically, pressurized co2 lets you have higher light with less problems, but if you want to save the money from co2 and expensive lights, then you can go low light, and still have great looking plants, it will just be harder.
What all do you have already? Filter, heater, tank? What lights?