Most Riddlers like
@Dr. Who and myself tend to follow Rid's (
@RM3) assertion that less is more. So, good start.
I believe from your schedule you're running synthetics? If you get the chance to look into organics, you should check out Roots Organics, and if you like Coco, maybe check out their original medium (coco, peat, perlite, pumice, and various amendments). Might be something as intriguing to you as supersoil. Not a soil, but a soilless organic mix. You also have FoxFarms if you're thinking supersoil, I just prefer the utility of soilless because it possesses the stability of soil while functioning similar to hydro. And in organics, you don't really have to pH.
I'd recommend the Formula 707 if it didn't hold so much water, but it does have less initial amendments, so you can construct it how you want instead of waiting 3-4 weeks to reamend or top dress. I like it, personally, but with the caveat of only being able to water every 5 days. If the Original weren't amended more heavily than 707, I'd roll with that or Greenlite for indoors.