Without sounding sarcastic, what makes me not ready for making my own macros?
I don't think that comment was meant to be negative at all.
Right now your tank is lightly planted with mostly low light slow growing species, and a few stems mixed in.
At this stage, there are other things that matter more than micros. If your intention is to add more fast growing stems, getting the others right will make more difference than the micro mix.
First is to get an idea of what PAR you are dealing with. The amount of light you provide has an effect on everything else. If you don't have enough, colorful stems will not be as colorful. Too much and algae can become a problem quick.
Dialing in CO2 is not dialing in bubbles. It's dialing in your pH drop. How are you measuring pH? API liquid or calibrated probe? Do you know your approximate pH drop? The more stems you add the more it will pay to get it right. The standard you will hear is a 1.0 drop, but most heavily planted tanks are more like 1.2 to 1.4.
As you increase light and CO2, the need for ferts also changes. EI dosing is a starting point. Right now with your mix of plants you really don't need much dosing. As you progress into more difficult plants and greater plant mass the demand will increase.
As to micros, I am a big believer in rolling your own. But again, with your current set up, it's not really a priority. Once you add more difficult fast growing stems, they will be more sensitive to the mix of micros.
Since you are new to all this, it might help you to find some journals of tanks that have similar goals to yours. It will help give you an idea of everything that goes into it, including the need for excellent maintenance and plant management.
As to dosing, I have a link in my signature below to a spreadsheet I put together that many here are using. It will give you a better understanding of all the things folks are tracking. The Share Your Dosing thread is also a good place to learn more about how folks manage their tanks.
So far it looks like you have a very nice start, and sounds like you have ambitions to improve. I also keep Bows, so it's nice to see the Boesemani in there.
If you do decide to roll your own micros, here is a link to my journal where I show how do it. Good luck with the tank and I look forward to seeing where it goes from here. Consider starting your own journal, as it's a great way to share and learn.