I'm no expert on either LED's or lighting, but I know a bit, and I think you are right on both fixtures. You could always add some window screen to the second to dim it down a bit if you need to.
I also looked at the "double bright" LED fixture. But this has no timer on it it would be a pain to set it to lunar every night. I thought about getting that and then adding a secondary light source for the night lighting but the cost is almost as much as the plant-capable led system with a timer on it. I'm pretty sure that has a lunar mode as well.
Window screen isn't a bad idea. I have tons of sun shade screen that cuts 80% of light out could place it over every 2nd or 3rd led
Sent from my toaster with the 4g's and the wifis