ADA 60-P planted tank
Easy carbo has an algaecide ingredient, which is why it's useful in addition to CO2 injection. It's a short term fix but sometimes useful.
Agree on aquarium plant food - that's where I get mine and it's a LOT cheaper and actually simple once you get the hang of it. sure someone here would do the calculations for the mix for you, if that makes things easier.
CRS are hugely ammonia sensitive so worth waiting a while. Maybe start with some standard cherries which are less inbred and so more tolerant.
I'm no scientist but people on here say test kits (unless laboratory grade) are actually so inaccurate as to be useless. There are various threads on this. You can get a tapwater report from your suppliers website, but your water will vary a lot week by week. It doesn't matter that much unless you're doing discuss or something very sensitive.
One thing you haven't mentioned is dechlorinator (prime is the cheapest) if you're using tap water. Goes in with every water change. And some people swear by Purigen in the filter to polish the water so it's crystal clear, seeing as you've got an opti white tank. I use it but can't say it's made a huge difference.
Running plant less won't do any harm certainly. Will help the soil leach some ammonia too, and you'll get a lot of dust from the Amazonia so worth doing a few water changes too. A bit of bubble wrap if y have any left from your deliveries makes a good buffer for putting water in to the tank.
With CO2, I'd run the tank without fish and excessively high levels of CO2 (yellow drop checker) for a while to get a sense of what plants need. Then cut it back when you've got good growth, then add fish. I'm trying this on my smaller tank.
In general, would read as many of ceg's posts on this forum as possible before you get going! Hope it goes better than my first tank... Good luck!